Hi people, just got 02 wrx today, don't know much about exhaust system yet.
It HELIX downpipe and full exhaust, not sure ab it 100 %
It's a bit to loud to me , seems like i need a tune to drive with it or just replace with stock downpipe ?
On neutral it will backfire a bit when i hit 5 K rpm.
The guy who sold it to me had engine and tranny fully rebuilt 2 k ago, all looks new and clean, also it does have recirculating blow off valve.
I live in Colorado high rockies.
Need to make it quitter and get rid of backfire.
Thanks for answers