Originally Posted by MarkD
I have not got any recommendation for FI cars yet. (I know what I would pick for a n/a M20). I wish I had a car to experiment with for a few weeks. If a MAF maxes out with a certain airflow, what you can do is remove the sensor from the body (tube) and insert it in a body with a bigger diameter, then it will not max out. But then you need to change the software to account for that. Maybe I just have to buy a project car and add a turbo, do all the magic on it and sell it afterwards. Anyway, the Bosch HFM5 as used on the E46 M3 is a possible MAF to use, but it's not a direct drop in. (both physically and electrically)
Hey Mark - just as a quick note - many in the BMW FI world wind up going with a Porsche 993TT MAF. Its a Bosch unit that's 3.5" in diameter and similar wiring to the e36 units.
You're more than welcome to my car to tune for a couple weeks but its not an m20