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      12-09-2012, 02:46 AM   #11

Drives: 135i Cab
Join Date: Jul 2012
Location: Phoenix, AZ

iTrader: (5)

Always a good idea to disconnect the battery when installing anything electrical. One, reduces risk, two, resets DME. It's very easy...10mm socket and disconnect negative terminal in the trunk.

First...take logs and see what your trims, AFR, and fuel pressures look like.

Second, swap coil packs and see if the problem follows. If it does, change coil packs, if it doesn't...

Third, swap plugs and see if the problem follows. If it does, new plugs, if it doesn't...

Forth, swap injectors.....
2008 E88--Fuel-It! Stage 4 LPFP & PI--PS2 turbos--JB4/MHD--FBO--662whp/604wtq
2011 E90--Fuel-It! S2BL LPFP and PI--PS2 Turbo--JB4/MHD--FBO--546whp/589wtq
2013 Mini JCW--Tune--DP--FMIC--a couple Fuel-It! goodies--265whp/320wtq
2013 F10--JB4/BM3
2015 F82--Fuel-It! Stage 3 LPFP & PI--PS2 Turbos-- JB4/BM3-FBO