sports cat / exhaust
 

i have a 2002 bug sti

so far i have decated the center exhaust , walbro pump and panel filter and re-map,but it still has the original exhaust fitted.

how much of a difference would it make if i was to fit a sports cat and a milltek system ?

Thanks

My sti hawk made an extra 70 bhp after fitting a milltek exhaust with sports cat. Very good quality bit of kit.

really an extra 70bhp from exhaust? i have got a 2000 turbo with 3 inch 5zigen fireball exhaust system with 3inch down pipe from turbo. decatted what would that do to my bhp? from standard 215bhp? cheers

210 bhp, just sounds like 300...

dunx

P.S. You need to map a car to get 70 bhp.

What increase did you see from your first set of changes and how did it effect the overall drive?

probably about 30hp ish , the changes made the overall drive a hell of a lot smoother right through the rev range .

Yea, I should have mentioned it was mapped at the same time.