ok so I just installed my test pipes on my 06 G35 Coupe and im hearing a rattling noise when it revs in between 2k and 3k... i checked and everything is tight, it seems like its coming from after the cats...basically the y pipe.. anyone else have this issue??? any suggestions? thanks!

 

Resonated or Non?

Either way, I'd say its rasp. What exhaust do you have?

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Will if you have just stock header's & exhaust with the test pipes. It's probably just the stock res. without the cats are makin it rasp.

 

It sounds like its coming from the Y pipe...

I have stock Headers, test pipes, stock y pipe, stock resonator and stock exhaust.......

 

does it sound like the heat shield or like the exhaust is vibrating

 

No I took the heatshield off and rev'd it while in the air checking for leaks or anything loose and nothing. it's like a rattling noise at around 2k - 3k coming from inside my Y Pipe...

 

Will with just the test pipes and my hks Ti exhaust it was a little rasy but when the borla header's went on i have a weird noise on right around the area your talkin about. I think your y-pipe vibrates when your around that rpm cause there's no resonator AkA cats to stop the noise.

 

That's what a VQ with test pipes will sound like. It's the nature of the beast and it's firing order. Unforuntately, nothing is loose.

 

I have the EXACT same problem on my 07 6mt coupe w/ megan test pipes ... Does anyone think changing the Y pipe to a aftermarket one should fix the issue?

 

Thats what I was thinking of doing... cause the noise doesnt come from the resonator, it comes from the Y pipe :-/ I hate this noise! i might just take off the test pipes and call it a day.....

 

sell them to me

 

I just order a new Y pipe so we'll see if the noise goes away... if not then i'll let you kno next week about the price for the Test Pipes

 

Haha you have rasp! I had rasps sooo much, went through 2 diferent cats/test pipes, went through 3 exhausts, I had so much rasp between 2k + they called me Rasp Master 2000 I settled now with a Fast Intentions full cat-back exhaust and Kinetix High Flow Cats, no rasp!

 

does anyone else have a 07 coupe with test pipes ? my "service engine soon" light keeps turning on even though I have non foulers installed ...

 

well i had my hks installed and there seemed to be the pipes hitting some part of the car so the guy put a 1 inch rubber thing in it and it seems 2 be working out. not sure if u have the same issue as me