Super Duper Cou
Registered User
I have a 1993 Super Coupe with an aftermarket MAF, K&N Air Filter, cat back true dual 2.5 inch exhaust, and a 5%OD supercharger pulley on it. I'm thinking about purchasing a 10% jackshaft pulley to get a little more power out of my car. My question is, will I have to gap the spark plugs, upgrade fuel pump, or upgrade injectors? Should I forget the 10% jackshaft and go with a 5% jackshaft? My car has probably around 210rwhp at the moment.