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Straight pipe question

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Old Apr 20, 2011 | 01:31 PM
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Originally Posted by RonyGT2
what about the drone with the straight pipes?
What drone. The things are so loud at WOT you can't hear yourself think.
 
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Old Apr 20, 2011 | 01:57 PM
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I don't think they're that loud but that's me
 
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Old Apr 20, 2011 | 02:04 PM
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Originally Posted by Blockhed
I don't think they're that loud but that's me
thats cause you haven't driven behind your car on the freeway, i have a Fabspeed Loud and couldn't even hear my exhaust following a 996tt Tip with straight pipes down the freeway.

dont get me wrong i like loud exhausts on some things
 
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Old Apr 20, 2011 | 03:41 PM
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I love my loud exhausts especially next to a Harley or a guy with loud speakers.
 
Last edited by langer911; Apr 20, 2011 at 08:26 PM.
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Old Apr 20, 2011 | 11:03 PM
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On any forced air inducted car, especially a turbo, you do not want any back pressure. I just had my car done at evoms and it got the most power with no cats or muffler, straight off the turbos with no back pressure was the best. Of course you wouldnt run it right off the turbo's so we did no cats and evoms mufflers with 76 mil tube., that gave me most power. They are the ones that gave me this info about back pressure on turbo cars.
 
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Old Apr 20, 2011 | 11:12 PM
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Originally Posted by universal111
On any forced air inducted car, especially a turbo, you do not want any back pressure. I just had my car done at evoms and it got the most power with no cats or muffler, straight off the turbos with no back pressure was the best. Of course you wouldnt run it right off the turbo's so we did no cats and evoms mufflers with 76 mil tube., that gave me most power. They are the ones that gave me this info about back pressure on turbo cars.
that is the general consensus but there have been multiple people on here report a gain of low end power with a muffled exhaust system versus straight pipes *shrug*
 
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Old Apr 21, 2011 | 03:00 PM
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True, on my set up they did 76 mil tube, no cats, but burns mufflers. Im assumingthey put the mufflers on for that reason.
 
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Old Apr 21, 2011 | 09:36 PM
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Originally Posted by universal111
On any forced air inducted car, especially a turbo, you do not want any back pressure. I just had my car done at evoms and it got the most power with no cats or muffler, straight off the turbos with no back pressure was the best. Of course you wouldnt run it right off the turbo's so we did no cats and evoms mufflers with 76 mil tube., that gave me most power. They are the ones that gave me this info about back pressure on turbo cars.
Any pics?
 
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Old Apr 22, 2011 | 08:43 AM
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put couple pics of my car up, but will get some of exhaust too.
 
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Old Apr 22, 2011 | 03:41 PM
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heres my set up no cats(997tt)... I think Evoms is doing similar like on KPGs car...

 
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Old Apr 22, 2011 | 05:05 PM
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I have a set of straight pipes that I never installed after I bought them from a member here. If anyone's interested, shoot me a PM
 
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Old May 6, 2011 | 12:00 PM
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I finally was able to fix my CEL p0103. It was an air leak cause by an o-ring that not seated correctly.
 
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Old May 6, 2011 | 07:27 PM
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Hey Guys, Is there really a noticable difference going from big 100 cell cats to no cats with both having the same size exhaust piping on 600HP to 700HP cars??...Thanks...
 
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Old May 6, 2011 | 07:44 PM
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Not sure why people are losing low end, but I just got a 3" straight pipe w/crossover & 4 mufflers done by a local shop (kind of like Markski's design w/single outs) and picked up 25 RWHP pretty much THROUGHOUT the range - I need to dig up the pre/post dyno sheet, but definitelly a noticable improvement.
 
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Old May 6, 2011 | 07:45 PM
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Not for "I don't want any drone" folks, but IMO, the car only now sounds like it should have from the factory.
 
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