I would guess no since the ECU will adjust AFRs somewhat, but I think this question would be better answered by someone that already has the PowerX tune. It will also depend on what PowerX tune you have. For instance, if memory serves me correctly I believe that BeyondRedline's custom PowerX tune is a little more lean giving a little more power. If that is the case, then you have to be a little more careful flowing more air in & out. So, I/E might make a difference, but I'm not sure. Anyone else have some insight regarding this question?
Sponsored By: Columbus Body Works / ARK Performance / Modern Automotive Performance / Forged Performance