You really need to see where your A/F is, in my experience I got the opposite result, then again you have bolt ons that could be leaning it out enough to throw the CEL unknown until you get a A/F reading pulled good luck-Justin

 

Should cost $80 or less to reprogram key at dealership, drive there w old ecu in car, then install yourself at dealership.

 

Still it wouldnt hurt to see what gain/or loss you received from this mod/upgrade/swap

 

Are you using the ap1 ecu with your swap?

 

currently yes.

 

Yes currently using the original MY03 AP1ecu, and made a choppy 192whp running very rich before VAFC2 tune

OP are you having any luck?