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Topic : Elbows vs crossover
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 Ozian 
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Reg. Date : 25/01/2013
Posts : 187
Location : Brisbane, Queensland, Australia
Posted : 18 Oct 2013 - 03:23   Post title : Elbows vs crossover
 
Ok, so I got a set of 45 degree elbows yesterday Link and will install them over the weekend. If I'm ok with the sound level the next step will be to modify them with a crossover tube, just to see if there is a difference in sound/performance.

Why didn't I go with one of the crossover set ups that are already out there (Foran, Platt and Merkat)? Two reasons.

1. Pretty much every set I've seen directs the compression waves from the rh and lh pipe into each other. While I'm no expert in wave and flow behaviour, logic tells me that this will create confusion and unnecessary pressure wave collision in the exhaust flow. In my mind the crossover connection should just provide pressure equalisation between the pipes and perhaps a bit of extra volume to deepen and mellow the tone. A set of simple elbows with a 1.25" crossover pipe should avoid the pressure wave collision conditions of the above mentioned products but still provide the equalisation function and resulting tone benefits.

2. Cost. There is no way I'm going to pay $275 - $400 for any of these simple products (with what i suspect is an inherent design flaw). $75 - $100, maybe, and even that would be providing a nice margin to whoever is manufacturing/selling it. I used to restore/show/race Mustangs when I was in Canada and I don't think that I ever paid more than $200 for a mandrel bent stainless steel H or X pipe, fully set up with hangers and collector connections. The price most of these companies are charging for such a simple and cheaply made product is just gouging, IMHO, and I don't plan on supporting that. I'm all for businesses making a reasonable profit but my observation is that in the motorcycling hobby we get bent over the barrel far too often.

Based on what I've read and heard of other bikes I may not be too happy with the blatty sound of the short TORS and elbows/crossover, so I may have to look at Foran or Platt slip ons in the future, but that will need to wait until after I get the suspension sorted. SWMBO has started to notice the regular delivery of items from eBay and trips to my local stealer over the last few weeks so I need to be strategic in what/when I purchase.

I'm not going for maximum power with this little experiment, but more looking for good tone and reasonable cost. A bit of extra power that I could feel in my butt-dyno would of course be welcome though. I will also do some research on tunes and try a couple that have been recommended and posted by forum members to manage decel popping.

Anyhow, I'll post pics as I get things done and report back on my experience!

 
Cheers,
Ian
2011 Blue/white stripe 1600, short TORS + tune, Meerkat cross-over, Thunderbike fork caps, Hagon Nitros, tail tidy
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 daz 
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Reg. Date : 12/05/2009
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Posted : 18 Oct 2013 - 03:56   Post title : Re: Elbows vs crossover (Re: Ozian)
 
I ran elbows for about 6 months and now run a gutted cat, which is probably the same as a crossover. (tho there are different types...more later) The elbows sounded like WWIII. I finally couldn't take it anymore. My gutted cat is actually maybe a bit more open than the kind of crossover it most resembles because i also drilled 1" holes in the walls between the inlet and outlet so some of the stream can go straight thru, yet it is WAY quieter than elbow. If i had to guess i'd say if elbows are a 10 on the volume scale and a stock cat is a 2, the gutted cat like mine is about a 4. This is with short tors by the way. But i run catless tunes and benefit from a considerable extra bit of power.

In short, elbows aren't like those really loud harleys, but they are obnoxious as hell never the less. There are many here that love making a spectacle of themselves with noise, but if you aren't one of those i think mine is just right. Just enough volume to hear the bike and enjoy the tone but not at all obnoxious. I think one of the crossovers i mentioned that are closest to my gutted cat would be great. You can gut the cat but it's a lot of work and welding and still much heavier than a crossover. By the way, when i mentioned the different crossovers and how on is more like my gutted cat, i mean the one that does NOT go straight from header to muffler but forces the flow to go to the middle before it can turn and go out the muffler or cross to the other muffler. While the other type is like elbows with a pipe connecting them just like the crossover at the headers.

 
2010 Blue/White Thunderbird, "Brutus". 1700 kit, short tors, gutted cat, UNI filter, filter seal off, custom tune. Brutus in his native habitat: Link
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 Ozian 
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Reg. Date : 25/01/2013
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Location : Brisbane, Queensland, Australia
Posted : 18 Oct 2013 - 04:31   Post title : Re: Elbows vs crossover (Re: daz)
 
Thanks for the input Daz. I'll definitely be looking at loading a catless tune once I make the swap as it looks like there are some good tunes loaded on this site that will improve power and reduce decel popping. I don't want my bike to be obnoxiously loud, but I do want to be heard as I use my bike for commuting sometimes and loud pipes have definitely saved my ass on a couple of occasions in the past.

 
Cheers,
Ian
2011 Blue/white stripe 1600, short TORS + tune, Meerkat cross-over, Thunderbike fork caps, Hagon Nitros, tail tidy
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 daz 
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Posted : 18 Oct 2013 - 05:51   Post title : Re: Elbows vs crossover (Re: Ozian)
 
Problem is, loud is subjective so what i think is obnoxious you may think is just right or visa versa. Thats what makes it hard to find the sound you want. Your best bet is to find a RAT pack and ride with them and hopefully be able to hear several different Tbird pipe/cat delete setups. A lot of people seem to think forans sound best, but they're also insanely expensive.

 
2010 Blue/White Thunderbird, "Brutus". 1700 kit, short tors, gutted cat, UNI filter, filter seal off, custom tune. Brutus in his native habitat: Link
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 rabbi 
Chaac
Reg. Date : 28/02/2012
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Location : Geelong, Victoria, Australia
Posted : 18 Oct 2013 - 06:01   Post title : Re: Elbows vs crossover (Re: daz)
 
When I first bought my bike I had de-catted with elbows and had short Tors, it was loud but the sound just didn't suit or sound like a big cruiser, it was sounded too raspy to me.

I eventually bought the Foran razorbacks with their cross over tube which gave me the sound and performance I was after.

My 5 cents on this much debated forum subject.

 
"Thinking is the hardest work there is, which is probably why so few people engage in it"
Henry Ford
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 intimidator32 
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Reg. Date : 12/05/2012
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Posted : 18 Oct 2013 - 10:35   Post title : Re: Elbows vs crossover (Re: rabbi)
 
I wonder if anyone has the D&D pipes with the cat delete pipe in place? There is only one sound clip on youtube of these pipes and its only a short dyno clip. If anyone on this forum has this setup would you please post a video clip as these pipes are reasonably priced and look good to boot

 
currently on a slow Harley but will have another Triumph eventually
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 Habuba 
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Reg. Date : 12/12/2010
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Location : New Bern, North Carolina, United States
Posted : 20 Oct 2013 - 00:12   Post title : Re: Elbows vs crossover (Re: intimidator32)
 
I've got the D&D's, but I also have the Cats still in stalled, I am interested in what the sound would be with out the Cats. Possible project for this Winter.

 
Link
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 Ozian 
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Posted : 20 Oct 2013 - 04:31   Post title : Re: Elbows vs crossover (Re: Ozian)
 
Cat has now been swapped out. I haven't gone for a ride yet due to visitors, but had an hour to myself to get the job done. Is definitely loud, but I'll let you all know what I think of the elbows once I've had a couple of good rides this week. In the meantime here are a couple of pics:

45 degree elbows, 150 mm on the long leg and 65 mm o the short (measured from the middle of the bend)


Big ol' ugly cat


Elbow ready for the muffler


Installed and tightened up


 
Cheers,
Ian
2011 Blue/white stripe 1600, short TORS + tune, Meerkat cross-over, Thunderbike fork caps, Hagon Nitros, tail tidy
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 sunnyday 
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Posted : 20 Oct 2013 - 05:42   Post title : Re: Elbows vs crossover (Re: Ozian)
 

Ozian wrote:

Cat has now been swapped out. I haven't gone for a ride yet due to visitors, but had an hour to myself to get the job done. Is definitely loud, but I'll let you all know what I think of the elbows once I've had a couple of good rides this week. In the meantime here are a couple of pics:

45 degree elbows, 150 mm on the long leg and 65 mm o the short (measured from the middle of the bend)


Big ol' ugly cat


Elbow ready for the muffler


Installed and tightened up


looks great,
please post a vid on sound,

cheers

 

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 Ozian 
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Location : Brisbane, Queensland, Australia
Posted : 20 Oct 2013 - 06:39   Post title : Re: Elbows vs crossover (Re: sunnyday)
 
I'll try to get one done next weekend.

 
Cheers,
Ian
2011 Blue/white stripe 1600, short TORS + tune, Meerkat cross-over, Thunderbike fork caps, Hagon Nitros, tail tidy
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 jescowhite 
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Reg. Date : 21/10/2013
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Location : El Paso, Texas, United States
Posted : 21 Oct 2013 - 01:26   Post title : Re: Elbows vs crossover (Re: Ozian)
 
I did the same thing, but went the even cheaper route and used the 90 degree EMT 1.25" galvanized pipe. I got the elbow for $4.70 US at my local hardware store and it took about 2 minutes to cut through on my work bench in a jig with a hacksaw. I am however still using the stock long mufflers. It has made a huge difference in the sound, so much deeper and throatier, but not obnoxious like what daz described with his TORs. It's not so much of a noticeable difference at idle, but under acceleration and deceleration you can really tell. I have a 2011 Storm and am running 20360 tune. I'm quite happy with it, my wallet is VERY happy with it, and I think you'll like it too. Cheers!

 
2011 Storm, de-cat with stock mufflers, K&N air filter, 20360 tune
Post edited by jescowhite on 21 Oct 2013 - 01:34
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 Ozian 
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Posted : 21 Oct 2013 - 02:25   Post title : Re: Elbows vs crossover (Re: jescowhite)
 
Yes, after a ride today I can confirm that with the short TORS it is waaaaay too loud and 'blatty' to leave as-is. I'm taking it to a fellow who does at lot of custom motorcycle exhaust work to install a simple cross over to see how that changes it before I look at alternate exhaust systems.

Also need to research the tune threads to see what tune I could use to decrease the decel popping, which I have a lot of currently.

More to come...

 
Cheers,
Ian
2011 Blue/white stripe 1600, short TORS + tune, Meerkat cross-over, Thunderbike fork caps, Hagon Nitros, tail tidy
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 Daycruiser 
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Posted : 21 Oct 2013 - 09:28   Post title : Re: Elbows vs crossover (Re: Ozian)
 
I've noticed the last few days that all the Crossover pipes and/or CAT eliminators have disappeared from EBay for the Thunderbird. Market I guess wasn't good enough to keep selling them? I think somebody down under is still making them but would cost more than it's worth by time it got to the US.

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 jescowhite 
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Posted : 21 Oct 2013 - 15:59   Post title : Re: Elbows vs crossover (Re: Daycruiser)
 
That's what turned me off to the eBay crossovers, they were all ridiculously over priced. I understand they have to make a profit in order to make it worth their while to produce the pipe and take the time to list them online and everything, but those prices were not reasonable at all. For 5 dollars you can do your own cat delete so to me it was a no brainer. And anyways the header pipes have a crossover already built into them, so does that not serve the purpose for a crossover anyways? Is there a need for further crossover in the CAT section?

 
2011 Storm, de-cat with stock mufflers, K&N air filter, 20360 tune
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 TBRider 
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Reg. Date : 21/10/2011
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Location : Foothills, The Mountains, United States
Posted : 21 Oct 2013 - 17:43   Post title : Re: Elbows vs crossover (Re: jescowhite)
 
The issue is; there is additional support on the crossover which Dave makes. It's engineered to take the additional side load stress on the exhaust just like the cat mounting offers. It's worth every penny. The price is very reasonable, considering they're construction and designed is built to last, unlike the cheap replacement inserts. The vibration and condensation will eventually damage and rust with the cheap units

Yes, there's a need in the crossover at the cat. The pipe is abit larger and in diameter and longer than the front. It balances the exhaust pulse, which helps provide in more efficient exhaust flow. The Triumph Twins are fairly unique, especially the 1600/1700 and a bit different in power delivery. They've been designed with high efficiency in mind.

Yep, it's a no brainer for those who want to take the cheap way out but you'll be replacing them again and again, where Daves will outlast the motorcycle.

Plain and simple; you can spend it now or later but you will eventually.

 



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 intimidator32 
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Posted : 22 Oct 2013 - 09:22   Post title : Re: Elbows vs crossover (Re: Ozian)
 
Ian, the crossover wont make any difference in that sound, i had that setup for a day, i sold my short TOR's and cut-out the baffles in my stock pipes and they sound way better than the shorties. I have the Foran crossover pipe and i think its plenty strong enough for the small amount of vibes the bird gives off

 
currently on a slow Harley but will have another Triumph eventually
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 jescowhite 
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Reg. Date : 21/10/2013
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Location : El Paso, Texas, United States
Posted : 22 Oct 2013 - 15:52   Post title : Re: Elbows vs crossover (Re: intimidator32)
 

intimidator32 wrote:

Ian, the crossover wont make any difference in that sound, i had that setup for a day, i sold my short TOR's and cut-out the baffles in my stock pipes and they sound way better than the shorties. I have the Foran crossover pipe and i think its plenty strong enough for the small amount of vibes the bird gives off


Could you explain to me how you cut out your baffles? I know this subject has been covered here before, as I've done much research on it, but I'm still confused as to where exactly to cut and how to punch it out. Any details you could share with me on the subject would be much appreciated!

 
2011 Storm, de-cat with stock mufflers, K&N air filter, 20360 tune
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 intimidator32 
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Posted : 22 Oct 2013 - 21:39   Post title : Re: Elbows vs crossover (Re: jescowhite)
 

jescowhite wrote:


intimidator32 wrote:

Ian, the crossover wont make any difference in that sound, i had that setup for a day, i sold my short TOR's and cut-out the baffles in my stock pipes and they sound way better than the shorties. I have the Foran crossover pipe and i think its plenty strong enough for the small amount of vibes the bird gives off


Could you explain to me how you cut out your baffles? I know this subject has been covered here before, as I've done much research on it, but I'm still confused as to where exactly to cut and how to punch it out. Any details you could share with me on the subject would be much appreciated!


I used tape to mask off where i wanted the line to be cut in the main back of the pipe and then drilled a hole and started cutting with a jigsaw. after that i used a driemal tool to smooth out the edge, looks good but not great, then you pull out that main back baffle. the next baffle i drilled around kind of the inner core of it and then used a metal chisel to finish that one off, it leaves and outer ring on the second baffle but that fine because its still a big opening. the third and final baffle is in the middle of the pipe and cannot be reached with a saw it has four small pipes to one side of it and cannot be completely drilled out so what i did was put a half inch drillbit on a long drillbit extension and drilled about six holes in the wall thats holding the small pipes in place. after all was finished i masked up the whole pipe and used black barbaque grill paint to blackout the inside of the pipes. hope this helps.

 
currently on a slow Harley but will have another Triumph eventually
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 jescowhite 
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Posted : 23 Oct 2013 - 01:15   Post title : Re: Elbows vs crossover (Re: intimidator32)
 
Okay so in the rear opening of the stock pipes, the part where it goes from chrome at the rim to black and tapers down into a cone (what a lot of other people refer to as the backing plate), is this a part of the baffle and do I cut that entire portion out? Or do you just cut around the inner opening? Is the first baffle only connected to the actual muffler at the rear? Do I pull the baffle out from the rear and not punch it out from the inlet? Thanks so much for the help!

 
2011 Storm, de-cat with stock mufflers, K&N air filter, 20360 tune
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 bryanbear84 
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Posted : 23 Oct 2013 - 03:36   Post title : Re: Elbows vs crossover (Re: intimidator32)
 
I have installed the D&D pipes. Also, I have the elbows. One reason I got the D&Ds is that they have a removeable baffle and I figured if I didn't like the sound, I could modify them. That is exactly what I did. After some experimenting, I ended up removing the packing in the baffle to get it the way I wanted it to sound. It's nice and rumbly at idle, NICE growl on throttle and a nice rumble at speed. On thing I really like is that at about 2300 rpm, the rumble is very noticeable, makes heads turn on the side streets. The only downer is some popping on hard decel, but I got that with the TORS too. I tried a few tunes and the only one that works for me is the TORS Tune. Got mixed results with others. Here is a link. Sorry for the sound quality, I can't figure out how to adjust my phone's recording volume. Enjoy.

Link

 
Thunderbird 1600
Harley 48
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 intimidator32 
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Posted : 23 Oct 2013 - 09:15   Post title : Re: Elbows vs crossover (Re: jescowhite)
 

jescowhite wrote:

Okay so in the rear opening of the stock pipes, the part where it goes from chrome at the rim to black and tapers down into a cone (what a lot of other people refer to as the backing plate), is this a part of the baffle and do I cut that entire portion out? Or do you just cut around the inner opening? Is the first baffle only connected to the actual muffler at the rear? Do I pull the baffle out from the rear and not punch it out from the inlet? Thanks so much for the help!


yes, i cutout the backing plate all the way to the edge so the back of the pipe is entirely open and that is the first baffle and it comes out as one piece probably inch and a half long pipe attached to it i'd say.

 
currently on a slow Harley but will have another Triumph eventually
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 intimidator32 
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Posted : 23 Oct 2013 - 09:20   Post title : Re: Elbows vs crossover (Re: bryanbear84)
 
thanks bryan, those look and sound better than the TOR's in my opinion. when i get all the other stuff done on my bike i may invest in the D&D pipes.

 
currently on a slow Harley but will have another Triumph eventually
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 jescowhite 
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Posted : 23 Oct 2013 - 12:21   Post title : Re: Elbows vs crossover (Re: intimidator32)
 

intimidator32 wrote:

jescowhite wrote:

Okay so in the rear opening of the stock pipes, the part where it goes from chrome at the rim to black and tapers down into a cone (what a lot of other people refer to as the backing plate), is this a part of the baffle and do I cut that entire portion out? Or do you just cut around the inner opening? Is the first baffle only connected to the actual muffler at the rear? Do I pull the baffle out from the rear and not punch it out from the inlet? Thanks so much for the help!


yes, i cutout the backing plate all the way to the edge so the back of the pipe is entirely open and that is the first baffle and it comes out as one piece probably inch and a half long pipe attached to it i'd say.


Awesome, that's exactly what I was needing to know. Once I get that first baffle out the rest should be pretty clear I think. I'm going to tackle this today after work. Thanks again!

 
2011 Storm, de-cat with stock mufflers, K&N air filter, 20360 tune
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 intimidator32 
Chaac
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Posted : 23 Oct 2013 - 16:36   Post title : Re: Elbows vs crossover (Re: jescowhite)
 


 
currently on a slow Harley but will have another Triumph eventually
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 Ozian 
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Posted : 24 Oct 2013 - 07:43   Post title : Re: Elbows vs crossover (Re: TBRider)
 
Well, after having the elbows on for a week I have to agree... These bikes NEED a crossover. I'm gonna eat some crow from my original position as I'm now going for one of the crossovers discussed on the site previously rather than working up a one off. I've got Peter from Meerkat making me one of his for my bike now. I had a good chat with him and based on the work he has done on his product and the way he's designed it I'd say he's already made exactly what I would have ended up with. Rather than experimenting to try and get it right I'll go with his. Got a way better price going direct to him over buying it from the local stealer too, so can't argue with that.

He also told me that he does a custom baffle replacement on the short TORS that will deepen the tone even more, so eventually I'll send him my mufflers and have that done as well. For about $550 I should have a system that is as good or better sounding than the Platt or Foran sets with the look I want for the bike (love the look of the short TORS!!). Yay!!!

I appreciate all the input you've all given me thus far, it's been really helpful. This is one of the best sites I've been on as everyone is helpful and encouraging without all the snarkiness and sniping that I've seen on other sites, even when people don't agree. Keep up the good work fellow TBirders!!

 
Cheers,
Ian
2011 Blue/white stripe 1600, short TORS + tune, Meerkat cross-over, Thunderbike fork caps, Hagon Nitros, tail tidy
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 AleXL4 
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Reg. Date : 17/09/2012
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Posted : 24 Oct 2013 - 16:04   Post title : Re: Elbows vs crossover (Re: Ozian)
 
G'day Ian,

You're right, Pete does make a good product, as you may have worked out I also use the Meerkat Crossover.

The best piece of kit I have fitted to the Bird.

I find that the Standard Long Mufflers are more than enough for my needs with the Crossover, and as a bonus, I have NO / ZERO popping or backfiring on deceleration. I use the Standard Triumph TORs MAP for the tune. Sounds damn good too.

Look forward to catching up one day.


Cheers Alex


PS: Are you coming up to Meerkat to have Pete fit it?



 
Enjoying the Journey
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 Ozian 
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Posted : 25 Oct 2013 - 05:57   Post title : Re: Elbows vs crossover (Re: AleXL4)
 
Hi Alex,

No, Peter is mailing my piece to me and I'll fit it myself (any excuse to break out the tools!). I may head up there in the new year to have him rework my TORS, so will let you know when I do.

I've been getting a heap of popping since installing my TORS and the TORS tune (even with the cat installed). I talked with one of the guys at Triumph and they're having the same problem with the bikes they're installing TORS or Foran pipe on lately. He's going to make some enquiries to Triumph to see if they've fiddled with the tune as they haven't had this much popping in the past. To be honest, I think that it popped less with the TORS, cat and standard tune.

I'm going to try loading Mark's seat hack tune, as Daz and others have had good success with that one in terms of power and reduced popping with similar combos to mine. I've been doing my homework on Tune ECU and I think that I'm comfortable with giving it a go. If I can't find a tune that mellows the popping out I'll most likely get it dyno tuned.

I like a good project.

 
Cheers,
Ian
2011 Blue/white stripe 1600, short TORS + tune, Meerkat cross-over, Thunderbike fork caps, Hagon Nitros, tail tidy
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 AleXL4 
Chaac
Reg. Date : 17/09/2012
Posts : 571
Location : Gympie, Queensland, Australia
Posted : 25 Oct 2013 - 08:59   Post title : Re: Elbows vs crossover (Re: Ozian)
 
Good one Ian, look forward to catching up one day mate.

Cheers Alex

 
Enjoying the Journey
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 daz 
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Reg. Date : 12/05/2009
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Posted : 26 Oct 2013 - 23:34   Post title : Re: Elbows vs crossover (Re: Ozian)
 

Ozian wrote:



I'm going to try loading Mark's seat hack tune, as Daz and others have had good success with that one in terms of power and reduced popping with similar combos to mine.

I like a good project.


Less popping? I never said that, and if i did it would have to be a typo because i get MORE popping with marks tune than any other tune. However, it's very minimal when i have the SAI plugged. I do however get better power than other tunes, tho i think Dizzes decat tune may have a little more on the bottom, not sure tho. But definately not as good everywhere else as marks tune.



 
2010 Blue/White Thunderbird, "Brutus". 1700 kit, short tors, gutted cat, UNI filter, filter seal off, custom tune. Brutus in his native habitat: Link
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 Ozian 
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Posted : 27 Oct 2013 - 04:37   Post title : Re: Elbows vs crossover (Re: daz)
 
Well, got the Meerkat crossover on and gave it a good 300km run today. VERY happy!!!!! Much deeper tone, nice rumble at cruise and give a deep bark when I give it the juice. It could still be a bit deeper, but I'll get the baffles done down the track.

Interesting, the crossover has also resulting in my decel popping reducing by about 70%! Not going to complain about that!!!

So... elbows BAD; Meerkat crossover GOOD!!

 
Cheers,
Ian
2011 Blue/white stripe 1600, short TORS + tune, Meerkat cross-over, Thunderbike fork caps, Hagon Nitros, tail tidy
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