this question is for the people who have a twin turbo kit. i was wondering if anyone has experienced a hp loss because of aftermarket test pipes. it sounds strange to me but some people said that it was true.

 

I'm using test pipes, but I really dunno about a hp loss as I have never dynoed it.

 

You should not, on a turbo set up the less restriction the better.

I don't have a TT on the 350Z yet, but on the 300 when I replaced the cats with straight pipes all the way through from turbos to mufflers I picked up 60 RWHP.