Be interesting to see. The 135IS dynos at 295whp. Dinan advertises the N55 Stage 2 at 355 crank horsepower. Take out 15% loss for a chassis dyno & you have 301whp. 6whp for a lot of money.
Best choice for the car is a COBB or JB4 depending on your mechanical aptitude, a FMIC & an E85 mix into 93 octane and close to 390whp on the dyno.
Last edited by BEAR-AvHistory; 04-07-2013 at 01:39 PM.