Performance Modifications for the NG900 / Old 9-3
What 900 / 9-3 b204 owners have to buy to hit 300 bhp ?
At the moment I run on (stock :D ) stage 3 ecu, catless exhaust, open intake , big D2 550mm x 300 mm x 75 mm intercooler.
I have HX40 in my garage and I slowly collecting other HW to fit it, but I was wondering can I cross 300 bhp on...