dawater

Just had a check engine light. HPTuners scanner revealed that its P0496 (Evaporative Emission System High Purge Flow). Could I have screwed up my tune to cause this? Should I reflash back to stock before going to the dealer? Or is this just one of those random gas cap problems?

Just paranoid, I guess....

This is on a stock 05 GTO (learning to tune with HPTuners before I mod).

jimmyblue

iTrader: (11)

I'd check the gas cap first. That's a freebie. It may take
a few start cycles for the code to drop out again.