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I am just wondering will a 98 or 99 cobra MAF work on a 98 SVT Tour? I am thinking about getting one and trying it. But I am just wondering if it will work or not... Thats all

Last edited by SVTSleepr; 10/04/03 03:43 PM.
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it would work, but I dont see it working very well. Chances are, you havent maxed out the flowing capacities of your stock MAF. You would also need a custom tuned chip to support it as well.

Im using a 80mm 2002 Mustang maf but thats only because Im running a 3.0L and Street Flight turbo kit.


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I just posted the same comment in another thread...
Unless you are going to do some serious modding(such as beyondloadedse), you don't need the bigger MAF.


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im using one also, but streetflight is making me a chip to work with it.

its gonna be on my 3L with all the goodies!


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I've been running mine for over a year with no problems. I also have an SAFC to recalibrate things though.


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Originally posted by EuroTour99:
I've been running mine for over a year with no problems. I also have an SAFC to recalibrate things though.




Yea except for the stuttering after warm up. What i've read over the years is that it's not a good idea. When the computer finds it you're not going to receive gains. I'd go with a Proflow.


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Using a MAF calibrated for a larger displacement engine is a very bad idea. It will leave almost no room to tune idle and off idle running (read below 2000rpm) as the MAF not be calibrated for such low kg/hr draw points and start at what a larger engine would draw at low rpm levels.

Also you will only be using about 2-2.5 volts of the 5 volt spectrum so the rest of your tuning will not be as precise or consistent.


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Makes sense to me.


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Originally posted by DemonSVT:
Using a MAF calibrated for a larger displacement engine is a very bad idea. It will leave almost no room to tune idle and off idle running (read below 2000rpm) as the MAF not be calibrated for such low kg/hr draw points and start at what a larger engine would draw at low rpm levels.

Also you will only be using about 2-2.5 volts of the 5 volt spectrum so the rest of your tuning will not be as precise or consistent.




even with a custom chip from streetflight?


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Originally posted by Russell:
even with a custom chip from streetflight?



You are still stuck using the flow calibration of the meter.

(generalized example)
If the MAF calibration has 200kg/hr as .1 volts and you idle at 75kg/hr you will never be able to tune idle worth a damn.

This is what I mean by not leaving any room for the MAF to read properly at such low flow rates.


Yes a chip can help compensate ($$$ of dyno time!) but even if you trick the PCM into making that 200 look like 75 for a stable idle when you leave idle and are flowing under the MAF's minimum you will always run lean!


Your best bet is to get a MAF calibrated for your kg/hr range of operations. An SVT MAF is a good place to start (it has a higher maximum kg/hr flow calibration and can support ~300FWHP)
Also a Pro-M (straight calibration) would be a great choice due to it's less restriction. (No center post) Then you can take the supplied transfer function and have it used as a base for your program.


2000 SVT #674 13.47 @ 102 - All Motor! It was not broke; Yet I fixed it anyway.

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