a MAF too small

[Jason Haines]

I don't think the Ford MAF is the same. Best Products (Pro Flow), who makes
most of the big Ford aftermarket MAFs, sells a MAF for the 1986-1989 GM
applications. It uses one of their 75 to 80 mm "bullet" MAFs and an adapter
box to convert the signals. I am not sure what the box does exactly (didn't
take it apart etc.). You will also set a burn off circuit code with this
because the Fords don't use a burn off cycle.

We have tried installing one (of the Pro Flow MAFs) on a heavily modified
420 CID twin turbo Corvette but have not been able to get it to work yet.
We were also using one of their controller boxes (to modify the MAF signal)
and a MAF calibrated to half scale (with the injector cal set to 25
lbs/hour but 50 lb/hr injectors installed in the vehicle).

Jason


At 01:26 PM 7/23/99 -0500, you wrote:
>
>
>
>> The 1986 to 1989 Corvette, Camaro and Firebird use a Bosch MAF sensor that
>> is a 0 to 5 Vdc sensor not a frequency type sensor (like that used on the
>> 1994 and newer Corvette, Camaro and Firebird).
>>
>
>If that's the case, then that sounds just like the sensor used on the
>mustangs, which is a bridge type sensor, and if memory serves, is made by
>bosch as well.  I _know_ that the two sensors are not identical (I had an 89
>mustang and currently own an 89 vette), but if the connectors can be adapted,
>that may be the best way to go, i.e. switching to a ford maf meter... the
>housings are both cylindrical, and the connector side on both can be faced in
>any direction.  I would also bet that the response curves are very close to
>one another, so basically all you have to do is call jegs or summit and get a
>large ford maf (75-80mm) with the right calibration tube for your injectors;
>splice in the right connector, and voila!  Smooth idle and no peaking values,
>and the computer doesn't have to be reprogrammed.  This works very well on
>fords, no reason why it shouldn't work on gm ecm's.
>
>Daniel
>