Okay, I know this is a bit early but I live in Haverford, PA (close to Philly) and I removed my resonator and have an aerospeed DTM style muffler with custom 2.25" piping. I don't have to pass emissions until November but I was wondering if anyone has any ideas of stuff I should do to the engine to make it run cleaner. It has 98K on it, a new O2 sensor, new bosh +4 plugs and new ford racing 9mm wires. I know that this is far in advance but if it's going to cost a bit, I'd like to know up front. thanks alot
