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Old 06-03-2013, 08:58 PM   #1
captain E34
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Join Date: Feb 2012
Location: Ottawa
Posts: 923
M50b20 nv 6 pin maf conversion help :(

hey guys, im in the middle of swapping out my tiny 2.75 6 pin maf in my 520 for a 3.5 4 pin maf from a 540,

I started with wiring up the wires the same way as the 540 but obviously having the 6 pin (which only has 5 pins being used) I have a left over wire,

I have 12 v power and the main ground hooked up but now im left with three wires on the dme side and 2 on the maf side....

is this combination not compatible at all or do I need to do some wire running to the dme?
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1988 535i M30 (Turbo Build)
1989 535i M30 (Beater)
1990 520i Soon To Be S52 (Turbo Build)
1994 525it M50 (Beater)
2005 X5 M64 (Daily)
2009 335i (Daily)
The Rest Is History...
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