Originally Posted by Bubbles
Dinan runs rich but his AFRs are a bit off, it should stay around 11:1-12:1 in the high RPM range. His fuel pump may be failing which could explain the dip and strange AFRs.
OP are you experiencing MPG loss? A failing fuel pump does not atomize fuel correctly which reduces MPG and HP.
Ya, that's what I'm figuring....but strangely I haven't noticed a real dip in MPG.....
but the car did feel more powerful immediately after the flash...it was also a LOT colder then, so it's hard to say whether it's temp related or not.....