Bosch MAF sensor question

[Jared Tschetter]

Daniel,
check out   --->  http://www.midwestcamaro.com/
and go to the 4th Gen MAF porting.  It should be the same procedure for the L98.
This will do what you were talking about with the ford unit.  Also there are a few
aftermarket parts out there.  The Whisper is the first that comes to mind, also the
Granatelli (sp?).  At any rate check it out and see if that might work with what you
were talking about.

Jared T.

> Those of us that have fooled around with ford eec-iv setups have found a fairly
> easy way to compensate for increased airflow through the motor, causing the
> computer to peg at max too early.  The solution is to use a larger maf housing
> and proportionally larger injectors (or higher fuel pressure).
>
> By keeping the sampling tube (the ring with the thin wires inside) constant, the
> maf will read proportionally lower airflow numbers with increase in housing
> size.  That's due to the air velocity through the sampling tube dropping (at
> constant cfm) with the larger housing.
>
>  To correct for the lower readings from the maf, use a proportionally larger
> injector (or higher regulator pressure).  The computer thinks at this point that
> the motor is flowing less air that actual, but because of the larger injectors
> (or fuel pressure) is actually delivering the correct amount of fuel.
>
>  I wish the ford maf units could work on the L98 motors, but alas, someone told
> me that they operate differently.  All I know is that the ford maf sensor is set
> up like a voltage bridge... don't know anything about the L98.  Still, if
> someone could cast or machine a larger housing to accomodate the gm sensor, then
> they could sell that and matched injectors as a recalibration kit.
>
>  Btw, 24lb/hr motorsport injectors work wonderfully on those old L98 motors.  My
> stock ones were 22lb/hr (89 vette motor), and after a few minor mods like
> exhaust and some head work I was running a bit lean.  The new injectors and
> stock fuel pressure are a perfect fit.  :-)
>
> Daniel