18-09-2014, 07:29 PM
(17-09-2014, 06:09 PM)RetroPug Wrote:(17-09-2014, 05:39 PM)S16 Wrote:(17-09-2014, 05:00 PM)Jonny81191 Wrote: Bigger is not always better here.. You want to keep gas velocity high (small pipe, raspier sound) while making sure there's not too much back pressure (bigger pipe, boomy/deeper sound). Obviously the stock boxes are restrictive so a standard bore exhaust with decat and a straight through design backbox is going to be the cheapest and probably the best option..
IMHO anyway
So 2.25/2.5 would be right?
2.25 would be ideal but louder if aftermarket, 2.5 will be much, much louder, and will probably lose you low down grunt but give a slightly better top end.
Overall, the difference is predominantly noise.
Thanks mate. I think I'll go with a 2.25 cat back. Remove the front box after the cat and have a straight through pipe to the new box. Gonna order my new brakes tomorrow. Any suggestions on induction?