The Perfect Turbo-Back Exhaust?
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Evolving Member
Joined: Oct 2006
Posts: 246
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From: The Last Sorta Free State in the US
The Perfect Turbo-Back Exhaust?
I've looked pretty extensively (yes, lots of search functionality) and it doesn't seem like what I want exists.
I'm trying to free up the turbo to spool faster (i.e. reduce lag) and per my tuner here in Vegas, I should be thinking about a downpipe and a high-flow catalytic converter.
Given that I'll be messing with the exhaust, it occurred to me that perhaps I could get 2 birds with one stone and lose some weight, too.
The overarching goal is of course to reduce the lag and improve the linearity of the power band.
On top of that, I have several other requirements:
1) Sound level as quiet as stock (preferably quieter). I'm a fan of less bark and more bite.
2) Total emissions compliance. For reasons that I won't go into here, failing an emissions test and/or being issued a citation for running non-street legal equipment on my car would have very significant impact for me.
3) No welding, cutting, or chassis alterations. I just want the exhaust; I don't want to start an infinite chain of messing with things.
4) Weight significantly less than stock. I understand that the stock system weighs almost 60 lbs (please correct me if I'm misinformed) so this one probably isn't too difficult.
5) No horsepower or torque loss anywhere through the power band. This seems like it would be self evident given that I'm trying to get a faster-spooling engine but I'm not willing to trade the top end for more low end, either.
Any ideas?
I'm trying to free up the turbo to spool faster (i.e. reduce lag) and per my tuner here in Vegas, I should be thinking about a downpipe and a high-flow catalytic converter.
Given that I'll be messing with the exhaust, it occurred to me that perhaps I could get 2 birds with one stone and lose some weight, too.
The overarching goal is of course to reduce the lag and improve the linearity of the power band.
On top of that, I have several other requirements:
1) Sound level as quiet as stock (preferably quieter). I'm a fan of less bark and more bite.
2) Total emissions compliance. For reasons that I won't go into here, failing an emissions test and/or being issued a citation for running non-street legal equipment on my car would have very significant impact for me.
3) No welding, cutting, or chassis alterations. I just want the exhaust; I don't want to start an infinite chain of messing with things.
4) Weight significantly less than stock. I understand that the stock system weighs almost 60 lbs (please correct me if I'm misinformed) so this one probably isn't too difficult.
5) No horsepower or torque loss anywhere through the power band. This seems like it would be self evident given that I'm trying to get a faster-spooling engine but I'm not willing to trade the top end for more low end, either.
Any ideas?
Evolving Member
Joined: Apr 2008
Posts: 133
Likes: 1
From: West Richland, Washington
I've looked pretty extensively (yes, lots of search functionality) and it doesn't seem like what I want exists.
I'm trying to free up the turbo to spool faster (i.e. reduce lag) and per my tuner here in Vegas, I should be thinking about a downpipe and a high-flow catalytic converter.
Given that I'll be messing with the exhaust, it occurred to me that perhaps I could get 2 birds with one stone and lose some weight, too.
The overarching goal is of course to reduce the lag and improve the linearity of the power band.
On top of that, I have several other requirements:
1) Sound level as quiet as stock (preferably quieter). I'm a fan of less bark and more bite.
2) Total emissions compliance. For reasons that I won't go into here, failing an emissions test and/or being issued a citation for running non-street legal equipment on my car would have very significant impact for me.
3) No welding, cutting, or chassis alterations. I just want the exhaust; I don't want to start an infinite chain of messing with things.
4) Weight significantly less than stock. I understand that the stock system weighs almost 60 lbs (please correct me if I'm misinformed) so this one probably isn't too difficult.
5) No horsepower or torque loss anywhere through the power band. This seems like it would be self evident given that I'm trying to get a faster-spooling engine but I'm not willing to trade the top end for more low end, either.
Any ideas?
I'm trying to free up the turbo to spool faster (i.e. reduce lag) and per my tuner here in Vegas, I should be thinking about a downpipe and a high-flow catalytic converter.
Given that I'll be messing with the exhaust, it occurred to me that perhaps I could get 2 birds with one stone and lose some weight, too.
The overarching goal is of course to reduce the lag and improve the linearity of the power band.
On top of that, I have several other requirements:
1) Sound level as quiet as stock (preferably quieter). I'm a fan of less bark and more bite.
2) Total emissions compliance. For reasons that I won't go into here, failing an emissions test and/or being issued a citation for running non-street legal equipment on my car would have very significant impact for me.
3) No welding, cutting, or chassis alterations. I just want the exhaust; I don't want to start an infinite chain of messing with things.
4) Weight significantly less than stock. I understand that the stock system weighs almost 60 lbs (please correct me if I'm misinformed) so this one probably isn't too difficult.
5) No horsepower or torque loss anywhere through the power band. This seems like it would be self evident given that I'm trying to get a faster-spooling engine but I'm not willing to trade the top end for more low end, either.
Any ideas?
I don't think your going to find a bolt on that is all of that. unless you somehow use the stock muffler with a resonator or two... They do make exhaust silencers for all of the exhausts sold. You may have to sacrifice noise level. I don't know to be honest though... but I really don't think your going to find all of that unless you do custom. And that means cutting, welding, etc.
but an inejen ses its stupid quiet.emissions goes through your cat and leaving one on there kills power high flow or not. BUT REMEBER quiet and power dont go toghther there are no such thing as fast quiet car.
Cobb turbo back or RRE turbo back. Those are the two exhausts that offer exactly what your looking for. I know that the Cobb has an option for a high flow catalytic converter, possibly RRE has one too.
Non of the exhausts will be quieter than stock, but for a full 3" system with no tapers they will be the quietest options out there. With a high flow cat I think you might be close to as quiet as the stock system. With my cobb system and a resonated testpipe, its very cop friendly and quiet enough for daily normal driving to barely hear the exhaust. The exhaust note does rise when WOT but not high enough to wake the world.
Non of the exhausts will be quieter than stock, but for a full 3" system with no tapers they will be the quietest options out there. With a high flow cat I think you might be close to as quiet as the stock system. With my cobb system and a resonated testpipe, its very cop friendly and quiet enough for daily normal driving to barely hear the exhaust. The exhaust note does rise when WOT but not high enough to wake the world.
Total emissions compliance ... No horsepower or torque loss anywhere through the power band ... No welding, cutting, or chassis alterations ... Sound level as quiet as stock ... Weight significantly less than stock ... I've looked pretty extensively (yes, lots of search functionality) and it doesn't seem like what I want exists
Where preserving emissions compliance is the bottom line, there WILL be peak power compromises, so get used to it. However, the least amount of power potential presents the least amount of compromise for reasons of mass airflow, so the factory turbo is the most forgiving where this is concerned (assuming that's what you're using). The presence of a HFC shouldn't adversely affect spool, so there is some consolation there.
As for your other criteria, a true 3", HFC equipped exhaust with a straight-through muffler is going to be your best bet. As for lightweight options, there are some that are advertised as such.
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Evolving Member
Joined: Jun 2007
Posts: 305
Likes: 0
From: New Jersey
If you want a real lightweight cat-back; be prepared to pay . The Greddy Ti is a sice cbe...~11lbs, but it is loud.
As for DP...get a cobb or megan racing...no chassis alteration.
Why don't you go for a black/stealth exhaust? I know Perrin & Megan Racing both have badass 3" systems. The ceramic coating deadens the sound a bit and they are anti-bling. I have a stealth cbe as part of my tbe and I love it...but it is still quite a bit louder than stock.
good luck.
As for DP...get a cobb or megan racing...no chassis alteration.
Why don't you go for a black/stealth exhaust? I know Perrin & Megan Racing both have badass 3" systems. The ceramic coating deadens the sound a bit and they are anti-bling. I have a stealth cbe as part of my tbe and I love it...but it is still quite a bit louder than stock.
good luck.
Surprised no one has mention fujitsubo exhaust. I have no experience with it but from others they say its quieter than stock . Its 76.3mm so its 3"
Last edited by kreionic; Jul 5, 2008 at 05:53 PM.
I was looking at getting a Fujitsubo but after searching the forum for the past week I don't think that is going to happen!https://www.evolutionm.net/forums/sh...ight=fujitsubo
https://www.evolutionm.net/forums/sh...ight=fujitsubo
https://www.evolutionm.net/forums/sh...8&page=4&pp=15
Last edited by Faust; Jul 5, 2008 at 06:50 PM.
Supposedly the Fujitusbo tapers down to 2.25" in their resonator though. I was looking at getting a Fujitsubo but after searching the forum for the past week I don't think that is going to happen!
https://www.evolutionm.net/forums/sh...ight=fujitsubo
https://www.evolutionm.net/forums/sh...ight=fujitsubo
I was looking at getting a Fujitsubo but after searching the forum for the past week I don't think that is going to happen!https://www.evolutionm.net/forums/sh...ight=fujitsubo
https://www.evolutionm.net/forums/sh...ight=fujitsubo
O wow dude didnt know that. That sucks. Just ignore my previous post now
Didnt we have this conversation the other day getting food? I thought i had this conversation with someone
Cobb turbo back or RRE turbo back. Those are the two exhausts that offer exactly what your looking for. I know that the Cobb has an option for a high flow catalytic converter, possibly RRE has one too.
Non of the exhausts will be quieter than stock, but for a full 3" system with no tapers they will be the quietest options out there. With a high flow cat I think you might be close to as quiet as the stock system. With my cobb system and a resonated testpipe, its very cop friendly and quiet enough for daily normal driving to barely hear the exhaust. The exhaust note does rise when WOT but not high enough to wake the world.
Non of the exhausts will be quieter than stock, but for a full 3" system with no tapers they will be the quietest options out there. With a high flow cat I think you might be close to as quiet as the stock system. With my cobb system and a resonated testpipe, its very cop friendly and quiet enough for daily normal driving to barely hear the exhaust. The exhaust note does rise when WOT but not high enough to wake the world.
I agree with the Cobb Tuning it is only just slightly louder, very nice quality (not Jun BL though) & draws no unwanted attention.
I just drove across Australia & back (9 full days) & the exhaust note was a pleasure, no drone & I hardly heard it.
Cheers Steve