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      03-19-2009, 12:35 PM   #29

Drives: 07 e93 335i
Join Date: Dec 2007
Location: toronto, on

iTrader: (1)

Originally Posted by Bubbles View Post
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 was also a LOT colder then, so it's hard to say whether it's temp related or not.....
SG | Coral Red | 6MT | Sports Pkg | CA | PDC | KWV2 | Dinan Stage II | Morr VS8 | Aero Lip |