I have a 92 integra with a b16 vtec in it. I have the ecu with the MUGEN chip and the VAFC running stock settings. I don't have access to a dyno to tune it. I get about 22 city 26 FWY. It should be around 26-28 city 30-32 highway. If I unhook the vafc will the car run more what stock it would? Should I get ride of the Mugen Chip? Will a SOHC Vtec ecu work with a DOHC vtec engine like an ecu out of a 95 civic ex?