Quote:
Originally Posted by Wagon_Si
Have you looked at Andy Forrest's website as it gives some guidance to what is required for certain gains, I used it as a guide when I first got my car.
I have milltek centre resonated section and back box on mine because they are quiet, I have decatted and got RCM manifolds on mine. Changing the manifold and up pipe made it a lot louder. Can't remember what Dave (Ginola) had on his STI, that sound nice, straight exit and looks well built.
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I have a Cobra 3" "Track day friendly" system on mine, full 3" turbo back, with custom 4.5" exit (you can specify changes if you order it new) think I paid £550 or there abouts for the lot. system has 2 resonators in the center section one small one large, and a silenced backbox, it is straight through though no bends etc.
Went with track friendly as it means no fuss when visiting various circuits for a bit of fun. and failing noise tests.. it sounds nice on full chat too!.
I believe Revolution also do a full 3" system with no restrictions but that is slip jointed rather than flanges.
Think mine is roughly 96 / 100db