What is the difference between HFC's and test pipes?
For me i'm looking for one that will make good power and how well it will sound. Here's an I idea of what I would like it to sound.
YouTube - Rogue Engineering E92 M3 Diablo RACE PROTOTYPE
For this one I may be stretching it a bit far but you get the idea. IF I could find one that sounds similiar to this, I will buy one right away.
YouTube - Porsche Carrera GT with Straight Pipes
Quote:
Originally Posted by shumby
get HFC's not test pipes
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