At least 1 whp to your ass.

 

well, with a header as well, one guy recorded (on dyno) a 10hp peak gain...like from 7500 and up...while the header helped the mid range.

I also got one made, it cost 140...I thought I saw the T1R for 500+ as well, thats why I went that route...if I could have got one for 89 I would have jumped on it.

 

The BMW test pipe was 600 dollars (there are only 2 made, and they are both 600)....The amuse and J's test pipe is almost $900 dollars!!!

 

good lawd...

 

I bought mine from A&J. I think It was over $100 shipped.