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      05-26-2012, 12:44 PM   #41
JamesM3M5
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Drives: E28 M5, E92 335i
Join Date: Sep 2011
Location: Northern VA

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Whoa! Sounds like you got incredibly lucky w/ that cop!

Yes, 2AAF comes and goes on lots of different cars with or without a tune. It has to do with the low pressure fuel pump actual speed versus specified speed. If there are no low pressure fuel system codes other than 2AAF, then it can safely be ignored unless there are other driveability problems.
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RRT Racing
E92 335i/6MT Dinan Stage 3: intercooler, oil cooler, intake, flash, exhaust, LW dual-mass flywheel.
Vishnu PWM methanol custom trunk mount, Diffsonline 3-clutch Salisbury custom diff, Ohlins Road and Track coilovers, Vorshlag camber plates, much more...
E28 M5 w/ buncha stuff, R171 SLK350