I was wondering if anyone knew how restrictive the stock S-pipe is? Would there be a noticeable gain from replacing this with a full 2.5" exhaust system using the stock header?

 

I'd say do the header and s-pipe first. Then the rest of the exhaust.

 

^^ X 2

 

Well I already had exhaust installed (without s-pipe). I was wanting to see how it sounded and test it out a bit before getting a header just because I really do not want a loud raspy car. Also because I havent fully decided between staying NA or going turbo.

I guess I should just dyno again and see what kind of increase I have now compared to my stock dyno. I just noticed the S pipe was ~$225 from both draxas and zpi and didnt know if I am still limiting myself a lot even having the full exhaust without a new s-pipe.

 

I would check the muffler bearings

 

Ya... but they're $50 to replace one set of bearings...

http://kalecoauto.com/index.php?main...products_id=10

 

No clue how thats related??