AFM to MAF

Post your E12 technical questions and comments here. Please, no off-topic posts.

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garyinwestoz
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AFM to MAF

Post by garyinwestoz »

I found this
http://www.rongineer.com/maf.html

..Snip...

"This fantastic engine used the early version of the Bosch Motronic engine management system. Later versions like the US model M6 also incorporated catalytic converters. As the engine management systems continued to evolve, the airflow meter (AFM), the ubiqutious "barn door", was replaced by the less restrictive mass airflow meter (MAF). With proper design and tuning, this improvement can be made on AFM equipped engines resulting in improved driveability and power without affecting emissions performance...."
Snip

is it appropriate /possible with our cars

what do ya think?
74 525 auto
76 525 - 4 speed, LPG and holley carb- restoring
77 528i- 4 speed manual
77 528i -4 speed manual getting rusty
79 528i auto - a SA car?
80 528i auto - ready to relicense
81 528i +3.5ltr - auto - restoring
86 525e 5 speed manual- dd
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Mike W.
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Location: Sonoma County

Post by Mike W. »

There's always a way, but...

There are a number of E28s with that conversion and people speak well of it. However I think it needs a chip for the ECU to go along with the MAF itself, and #1, L jet doesn't have a removable chip, #2 I dont think one is made for L-jet. I think you would have to convert to Motronic, then get the conversion kit. A lot of work and expense for what I've heard is a nice, but not overwelming gain.

http://www.millerperformancecars.com/index.php
Mike W.



02 525ita. Wife's, aka grocery getter
02 530i. New to the fleet, 3 pedals.
03 QX4, AKA the Datsun. Finally got the 4WD vacationmoble to stop smoking.
07 Xterra. Still on the DL, a purchase from hell.
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Eddie in TO
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Post by Eddie in TO »

^^^Yes, I also understand Motronic is a pre-requisite for the Miller MAF upgrade. I also hear nothing but positive comments regarding their system.
Eddie Ribeiro
5erholic
1980 528i with a BMW Motorsport heart

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anthony
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Location: San Rafael CA

MAF

Post by anthony »

Sounds intriguing. A tad expensive, that is if you have to buy all that goes with it.
Anthony
1980 528i 3.5 M30B35 motronic 1.3
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