anyone ported out a slp maf?
Yes. See my thread "screwdriver tuning the SLP MAF".
If you ported it you will probably have to change the
resistor value to return to a neutral mixture calibration
(or course, if you have the earlier years SLP MAF, it
wasn't neutral to start).
Mine is descreened, lightly ported (really just dressing
down the ridges on the cast aluminum part) and needed
the resistor increased from 2700 to 3300 to compensate
for the metering error. A more aggressive hog-out would
need more of an increase than that. Fortunately the
bare truck MAF is over 20% rich on an F-body, so you
have plenty of room to work.
If you ported it you will probably have to change the
resistor value to return to a neutral mixture calibration
(or course, if you have the earlier years SLP MAF, it
wasn't neutral to start).
Mine is descreened, lightly ported (really just dressing
down the ridges on the cast aluminum part) and needed
the resistor increased from 2700 to 3300 to compensate
for the metering error. A more aggressive hog-out would
need more of an increase than that. Fortunately the
bare truck MAF is over 20% rich on an F-body, so you
have plenty of room to work.
