I've read a lot about some test pipes making Honda-like fart noises on a Z. I'm interested in knowing if the Stillen test pipes, with the expansion chamber, sound like the straight test pipes eg. Helix, or do they sound good? A sound file if anyone has one of these would be great.

Thanks

 

Edit - I misread.

Sorry.

 

I have the stillen's and i love them. They are loud, deep, and they give me a good pull after 4000rpm. But from about 2700rpm to 3400rpm there is a bit of raspiness on the accelerate and on the bog down. but it is very short also when you floor it you dont really get raspiness. also in a neutral rev only when the needle falls back down from about 2500 to 2000( light hiss ).

 

I have the Stillen's with Borla Headers and Borla true dual and get compliments on my exhaust note all the time now.

I LOVE them and the new torque I have!!