Intake & Exhaust Questions and info regarding various aftermatket exhaust systems for the G35 (Headers,Y-Pipes, and Cat-Back Systems)

Sound diff between testpipe and hfc cat along with smell?

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Old Aug 29, 2007 | 06:55 PM
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Boostwhore's Avatar
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Sound diff between testpipe and hfc cat along with smell?

I use to own an evo with a big turbo and 750injectors along with a straightpipe exhaust and at times the smell would get to me..... my questions is how bad is the gas smell with test pipes on a g isnt even noticeable? I currently have the fast intentions exhaust and its just way to quiet for me on the stock cats... ive researched some and havent really been able to anwser my question
 
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Old Aug 29, 2007 | 08:39 PM
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From: Meifumado
From what I understand, unless u r boosted, the Tp's will oonly give you a few more ponies than good quality metallic core HFC's, but u will likely smell unburnt gas fumes that sneak into the cabin.

The Tp's will definetly create more of rasp than HFC's (most do not desire a raspy exhaust note).

So if u r NA, I recommend a quality set of HFC's. I like my power enterprise's (but expensive)--The F/I and Crawford's seem to be the most popular.
 

Last edited by jonnylaw; Aug 29, 2007 at 08:42 PM.
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Old Aug 29, 2007 | 08:43 PM
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the high flow cats will really open it up for you. search extreme4377 for sound clips of the FI catback + FI cats.

you'll still get that unburnt gas smell with test pipes on this car.
 
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Old Aug 29, 2007 | 10:04 PM
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ya i like the sound of the test pipes but u get some smell it is not that bad
 
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Old Aug 29, 2007 | 11:05 PM
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Smell SUCKS!!! Metallic HFC's are the perfect match for the Intimdator...and on major sale for another day!!!
 
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Old Aug 30, 2007 | 07:11 PM
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ive noticed in that in the winter, the smell goes away. kinda odd, and really not much of a contribution to the thread.. i hate you guys. im going to hang myself with a belt!
 
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