Hondata

99 civic si if that matters any
Oem distributor 5000 miles on it bought new
new ngk bkr7e resistor plugs
p28 ecu with q37
Removed the hood exit and reinstalled the skunk2 megapower exhaust to check AFRs with my wideband and its pegging full rich. Engine was previously tuned on the same setup ...

I dont know what else to do to this. I've wired the purple and yel/red wires into the ecu clips with pins provided at the designated points, ground is on the thermostat housing with the main harness ground, car runs like it has a very bad misfire. Coils are brand new, distributor is oem, power and ...