My exhaust video here youtu.be/23wJ2BbrQMU I'm really glad the project came out great. Twice yesterday around 45mph it lit the tires up and got sideways. Here are my engine off codes 81-SecondaryAirDiverterCircuitFailure(O) 82-SecondaryAirBypassCircuitFailure(O) 85-CANPCircuitFailure(O) 95-FuelPumpCircuitOpen-PCMToMotorGround(CM,O) Haven't ran engine on codes yet. My car bucks and any rpm when I give light throttle. Moderate to heavy throttle and the bucking goes away, why? Also I am running really rich and only get 10mpg something must be wrong right. I get exactly half fuel mileage I got before the engine overhaul. I was expecting better since the engine is more efficient. Thank you for any help!