I think this was covered somewhat on the Akrapovic full exhaust system. But, does anyone know if Dinan will allow you to purchase their "stage 2" software if you are running a competitor's xpipe and HFC's (i.e. Fabspeed)?
They sell their stage 2 software to remove the CEL for customers who buy their Dinan midpipe (which is catless). Curious if they will allow you to buy the stage 2 if you don't have their midpipe and are using another vendor's...