MAF cleaning on N55 with pictures
can be with any MAF Sensor on bimmer too ( N52 MAF )


Tools:
- torx screw (torx25)
- flat head screw driver

and a bottle of
Mass Air Flow Cleaner



Install time: 15-45min

pretty easy DIY but
BECAREFUL of the sensor - this part is expensive.
*Like any DIY this is at ur own risk members.


FIG 1: Pop those clips off the intake box


FIG 2: different angle, pop em off there are 4 clips.
then lift the lid high and pull off - put a little muscle into it.
u'll see how the back of lid locks on - just remeber that when
putting back on.


FIG 3: you want to use a mini flat head screw driver,
pull the sensor plug out. then lift the intake lid and
unscrew the 2 bolts with torx wrench.
THEN CAREFULLY wiggle off the MAF sensor - and pull it
out. DONT TOUCH the electronic insides only spray it.


FIG 4: Spray the electronics
shake off any excess juice - let it air dry.
takes a few seconds.


FIG 5: 4-10hp
if u chit is dirty it'll make a big difference.
they say clean the MAF sensor every time u change the
air filter.


FIG 6:
check to make sure the sensor is dry.
then put it all back.


congrats ur MAF Sensor is clean.

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2011 335 E90 MTECH 6MT • KW V3 • INJEN Intake • Berk 4" DP • Vanguard V2 exhaust • Procede V5 • Stoptech BBK • RPI Scoops • Karbonwerk CSL Trunk • LUX H8 • 19" BBS LM • 18" BBS GT4