maf conversion kit

[DaveD]

any comments from the mre knowledgable

http://scottiesharpe.com/store/proddeta ... F&from=ALL

[JazzMan]

So thats a bit over Ԛ£300 for a MAF + chip.

If only the 850 MAF's were not like rocking horse poop it would be easy and cheap to do these swaps!

Apparently there was an E36 model that used the same MAF, but I bought one from a car of the era and it was complete wrong - doh. I guess perhaps it was a US thing as I got the info from E30tech

[jaistanley]

If its as much as that I'd go to mega squirt all day long. Some boys on this forum can now supply you with a pretty much plug, play and fiddle to your hearts content sollution.

You could ditch the MAF altogether and use a MAP sensor and throttle position sensor. You'd be able to totally re-map to suit your engine and probably gain 10-15 horses and low down torque to boot...

Jai

[JazzMan]

If its as much as that I'd go to mega squirt all day long. Some boys on this forum can now supply you with a pretty much plug, play and fiddle to your hearts content sollution.

You could ditch the MAF altogether and use a MAP sensor and throttle position sensor. You'd be able to totally re-map to suit your engine and probably gain 10-15 horses and low down torque to boot...

Jai

That's pretty much what I plan to do with mine at some point in the future

[dazleeds]

sorry im a bit out of my depth here

but are you saying the maf fr an 850 is direct m20 fit and will raise power

i may just have to go find one if thats the case
what are they worth 2nd hand??

any info appreciated i crave more power on a daily basis

[gcorky]

sorry im a bit out of my depth here

but are you saying the maf fr an 850 is direct m20 fit and will raise power

i may just have to go find one if thats the case
what are they worth 2nd hand??

any info appreciated i crave more power on a daily basis

daz squirt it and use map....cone filter directly on throotle body is said to be nice and throaty then youve got all features available and infinite tuning

[JazzMan]

heres a few links related to m50 maf on m20:



This is the thread I originally read that contains the information: http://www.e30tech.com/forum/viewtopic. ... t=320i+maf

For those that dont have an account here is a copy paste;

I see such a diffrence in tunings on M20Ԛ´s and E30Ԛ´s in general and everybody trying to do better then what works 100%

So I was thinking that you boys without custom software and piggybacks along with standalones would write in this thread what BMW parts bin combo you have working in your motor,

IԚ´m talking injector swaps, AFM swaps, MAF swaps, diffrent FPRԚ´s, camԚ´s and so on,

I know the brits just copy eachother with great results every time, the americans all do their own thing and more often then not , the turn out isnԚ´t what was excpected,

IԚ´ll start off with the following

MAF swap from a E36 320i. 4pin (13 62 1 733 678) (70mm diameter)
Car is Ԛ´86 325i euro(9.7compression) (ecu 081)
no O2 input into ECU either
assume everything else stock.

Installation of MAF:
12v from fuel pump relay, signal wire to original AFM signal wire into ecu(grey yellow, #7 on ecu end).
ground to ground.

Results: no problems and complete stock drivability.
good throttle response, and probably some HP

Note : this is a BOSCH M50B20 MAF and no other MAF may work, there is almost a 100% chance that other MAFԚ´s will not work as easily.

This MAF is also found on E32 850i, E32 750i, E34 520i, and E36 M50 320i

I will try and get another one and try on a completly stock us model 325i engine (173ecu)

Please only write into the thread what works not what should work and what might work,
for instance IԚ´m talking 2.7 swaps that are 100% correct .

I tried to order the MAF via breakers but they repeatedly told me this MAF was only on the 850i and they couldnt not get it. I got the one from the 320i but it has the round pin layout as shown in this thread and diagram:

http://www.e30tech.com/forum/viewtopic. ... 99&start=0



There does not seem to be confirmation if this works or not. It seem to suggest that it shouldnt work. Some testing is need I think.

[Ant]

the maf in question is used on E32 750i late production, and early M50B20 non vanos.

Gunni posted that a while back iirc ?

Another vote for MS btw Dave, MAF and remap isn't gonna cut it dude.

Dead money.

[gcorky]

the maf in question is used on E32 750i late production, and early M50B20 non vanos.

Gunni posted that a while back iirc ?

Another vote for MS btw Dave, MAF and remap isn't gonna cut it dude.

Dead money.

think people are dawnted by an ms wire up,and would rather take a gamble on jiggery pokery...Ant supplied my ms with labled loom etc pre burned for me to run from box...ms site is huge and is proven and plenty of support...

[JazzMan]

the maf in question is used on E32 750i late production, and early M50B20 non vanos.

Gunni posted that a while back iirc ?

Another vote for MS btw Dave, MAF and remap isn't gonna cut it dude.

Dead money.

Quite possibly where i first read about it. I do plan to go MS at some point in the future, but i want to finish the rest of the car first I will no doubt be in contact when the time comes

[Brianmoooore]

Thoroughly confused by Jazzman's post from the e30tech. site.
This link seems to suggest that the M20 MAF can be stuck in place of a 325 M20 AFM with no changes whatsoever, except for the plug, which seems unlikely to me because of the different airflow/output characteristics of a AFM and MAF.
I have a 320 MAF, with Bosch numbers on it 0 280 212 010 1718 521 9. If the VIN of the car from which it came is fed into the online ETK, it comes up with the BMW part number given in the e30tech link.
One small problem though - Link shows a four pin plug. My MAF has a six pin connector, although the loom that goes with it only has five pins fitted in the plug.
Any one know what's right and what's wrong?

[Dan318-is]

People i was also told to try this on my Is but never got around to it. A well known hero in darlington called Omi hemps used an m50b20 non vanos MAF on his 318is and although it idled apparently it died mid range. Further research from Mr tim summerhayes, omi, and myself, all be it very basic, showed that some MAFs between certain models on the ETK were the same. e.g. z3 1.9 MAFs and E36 318i MAFs (only the late ones). Tim also figured out that there MIGHT be a possibilty of these working on an Is although i dont no if they will work on other E30 models. We also did not no if they have built in converters.

HTH

[RichS]

Thoroughly confused by Jazzman's post from the e30tech. site.
This link seems to suggest that the M20 MAF can be stuck in place of a 325 M20 AFM with no changes whatsoever, except for the plug, which seems unlikely to me because of the different airflow/output characteristics of a AFM and MAF.
I have a 320 MAF, with Bosch numbers on it 0 280 212 010 1718 521 9. If the VIN of the car from which it came is fed into the online ETK, it comes up with the BMW part number given in the e30tech link.
One small problem though - Link shows a four pin plug. My MAF has a six pin connector, although the loom that goes with it only has five pins fitted in the plug.
Any one know what's right and what's wrong?

It is very confusing, i dont think the guys on e30tech were too clear weather that would actually work. Ive got a 320i maf too and that is also a 6 pin not a 4 pin.

[Ant]

the MAF Omi used was the "correct" item

the problem is the AFM responds slower ( its damped by the spring to some extent ) the MAF shows an instant resistance change for a change in throttle openeing, an FSE with its higher rising rate may be worth some experimentation, the higher 1.7:1 rate ( 1:1 stk) could "fill" the gap upon accel

This is new ground to some extent, you will not be able to just slap on a MAF and go caning, you may find that @ 1K 2K 3K etc steps, the AFR loads are spot on, just the faster respnse makes lean spots as you accel

making sense ?

[tim_s]

showed that some MAFs between certain models on the ETK were the same. e.g. z3 1.9 MAFs and E36 318i MAFs (only the late ones). Tim also figured out that there MIGHT be a possibilty of these working on an Is although i dont no if they will work on other E30 models. We also did not no if they have built in converters.

Lol Dan that's a bit wrong; the MAF from a 1.9 M44 is completely different, and the E36 318i has an AFM. All a bit of a waste on a 318is imo, peak power output on standard car on sheps' rollers on MS was no different with the AFM in place or with just some pipe instead, made a nicer bark without the AFM but not much difference in throttle response really.

[Dan318-is]

showed that some MAFs between certain models on the ETK were the same. e.g. z3 1.9 MAFs and E36 318i MAFs (only the late ones). Tim also figured out that there MIGHT be a possibilty of these working on an Is although i dont no if they will work on other E30 models. We also did not no if they have built in converters.

Lol Dan that's a bit wrong; the MAF from a 1.9 M44 is completely different, and the E36 318i has an AFM. All a bit of a waste on a 318is imo, peak power output on standard car on sheps' rollers on MS was no different with the AFM in place or with just some pipe instead, made a nicer bark without the AFM but not much difference in throttle response really.

i new it was somethign alone those lines though; i think iv given up with it, tis obviously not meant to be.

maybe m44 wiring loom/ecu/maf mite work?