hey, im a mitsu waja driver, car quite old de... i was thinking of getting my extractor changed to 4-2-1 Zenden and Bullet Zenden and muffler remain stock...
i dunno about the price of these two item getting fix in my waja but i think it would cost around rm500?
my waja have a very sluggish pick-up..RPM goes high but km/h pick-up is slow.. just hate it... really wanted to change it so the acceleration is better,responsive and more silent(engine loud like very fast de, but check speedometer at 1st gear 30km/h nia 4000 rpm