Evening everyone,
been thinking about getting a new cat back exhaust for my hr zed now for the last couple of months.
Have been looking at the likes of milltek etc, but today went to a custom exhaust shop to get some ideas, they recommended new y pipe going into a 3 inch bore size pipe.
I've been speaking to a few people which have said that is too big for the power of the car and can actually reduce bhp if too much back pressure is lost...
What are your thoughts on this? The reason I was looking into custom exhausts is that the company who make these give a lifetime guarantee and have very good reviews from word of mouth and online.
Thanks in Advance
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