Anyone opposed to assumptions and a little bench racing should refrain from reading the following.
A guy at my school has a 2001 BMW 323i with a borla catback exhaust, k&n intake, and a ecu chip of unknown origin (at least to me). Of course I can beat that, but my question is that he is about to buy a zex dry nitrous oxide kit that is advertized to add "55-75" horsepower and underdrive pulleys. Without the exhaust he dynoed at approx. 200 at the crank. What do you all think would be the outcome? Is even bothering to ask this an underestimation of the boxer? btw- 06 wrx spt catback