this question is for all the people w/ a turbo system w/ test pipes. i herd that some people are actually losing horsepower becasue of there test pipes. i herd the reason was because the test pipes was leaking. has anybody experienced this yet and if you have what test pipes was you running? for all the people who have actully gained hp? which pipes are yourunning?

 

ACP has posted several threads regarding his 30 or so whp gain and trq gains from switching over from high flow cats. I'm following his suit and having the Greddy EVO II exhaust and test pipes installed soon. I haven't heard of test pipes leaking or causing loss of power, but do know first hand that leaky wastegate gasgets will cause loss of power.

 

Try this one or the 10 others like it.

https://my350z.com/forum/showthread....ght=test+pipes