RS2 Porsche 968 MAF

[alg]

Just some advice. The RS2 came with a reciept indicating a MAF fitted end 2003. Detailed as Porsche 968 no 0280213017 (which corresponds to RS2 part no ) @ £170.
Is this correct for car ( I assume so ) ?
Can this be improved on with standard engine e.g use Sport Quattro (M5/928) MAF ?
Is this a good price for RS2/S2 owners looking to replace/upgrade ?

I have not dismantled it to comment on mesh configuration etc

Oh and a final question, would a 968 turbo MAF be different/better/compatable?????

Cheers in advance

[audiman]

SQ uses the best MAF, but its wiring is different, and due to it being so rare, no wiring diagrams can be found

[John Speake]

Yes the SQ uses the same MAF as the 928. I can supply the wiring of the 6 way plug, which is different to the RS2 device.

Then you would need to remap to the 928 MAF, which I know some RS2 people have done in America.

[S2central.net]

Alternatively, can the RS2 MAF be fitted to a larger tube... and then the ECU remapped to that ?

Paul

[AndyP]

Alternatively, can the RS2 MAF be fitted to a larger tube... and then the ECU remapped to that ?

Paul

OMG, 'can of worms' springs to mind

http://www.s2forum.com/forum/showthread.php?t=5724&highlight=carbon+MAF

[BRY]

Alternatively throw the maf in the bin and use an ECU which doesn't use one.

[4WheelDrifter]

OMG, 'can of worms' springs to mind

http://www.s2forum.com/forum/showthr...ght=carbon+MAF

Nicely dug up John Speake.

Tekkno's carbon MAF tube.

Audi Sport quattro, Porsche 928 and BMW E34 M5 all share the same MAF BTW, Bosch 0 280 214 001.

[pastures16]

tell us more then

[Jamo]

I've actually held that MAF, was suppose to come home to Birmingham but it didn't.

I lost sleep for weeks

[newsh]

Alternatively, can the RS2 MAF be fitted to a larger tube... and then the ECU remapped to that ?

Paul

Apparently thats really difficult, even Prof. Motronic baulked at that recently.

[S2central.net]

Alternatively throw the maf in the bin and use an ECU which doesn't use one.

Oh yeah as my uncle Tommy used to say - Just like that !

[BRY]

Oh yeah as my uncle Tommy used to say - Just like that !

How much would a "live" re-map be to use the big tube MAF?
How much would the big tube maf cost?
How long would it take Samco to produce the big tube Maf hose? :mischeif:

Uncle Tommy was right wasn't he?

[newsh]

Just read the whole of that "carbon maf tube debacle" interestingly, several years later, Mihnea still won't map a car with a MAF element fitted to a bigger tube than it was designed for, thats as of last week.

[S2central.net]

Is this because Bosch make it so damn hard to find accurate data on the MAF devices ?

You would need an accurate flowbench to plot the voltage output from a MAF residing in a custom / larger tube so as to characterise it properly... WIthout that you would just be in a land of guesswork.

From additional exchanges with the man from JDS he tells me that his flowbench runs at 12 nominal rates but does not provide an exact / accurate cfm measurement. Using a known fresh/healthy MAF builds up a voltage profile at those 12 speeds which is then used as the reference point for testing and calibrating other MAFs.

I have a cunning plan to see if I can calibration data from the JDS rig - but it might be expensive as it needs a reference MAF to provide a voltage that correlates to Bosch factory data for a reasonably accurate indication of airmass flow.

If we know the profile of MAF voltage to air mass then we have a pretty accurate indication of engine power at any given operating point on the engine. Watch this space - it might come to nothing - but its worth a rattle.

Paul

[Flat on my back]

Surely 'freedom of information rights' in the States could help on this matter?