85mm SLP MAF ???
The '99 Corvette I believe used a MAF like the F-body,
a 75mm "Oreo" style. They changed in, I think, '01 to
the 85mm and the Z06 got the 85mm descreened.
You want to beware of the tuning effects of the early
SLP MAFs, they have a lean bias which may, or may not
be what helps you (or, some of both in different regions
of operation). There are two versions for the F-body and
I do not know whether either one is the one they sell for
the Corvettes. But if you had one, and peeled off the heat
shrink tubing from the soldered-in resistor, 2.7Kohms is the
value for the '01-'02 F-body version (red-violet-red-gold)
which is the most mixture-neutral. I think 2.4K was used
for the '98-'00 version (the lower value pulls the reading
to the lean side; bare, the 85mm MAF produces a very
rich reading with the F-body cal table). But I'm only vaguely
recalling the '98-'00 value while the other I have seen and
taken apart for myself.
Personally I would stay away from them all, I don't think
the "calibration" is very good. Unless you're ready to tune
and then I'd pull the resistor and use the truck MAF table,
good to go.
a 75mm "Oreo" style. They changed in, I think, '01 to
the 85mm and the Z06 got the 85mm descreened.
You want to beware of the tuning effects of the early
SLP MAFs, they have a lean bias which may, or may not
be what helps you (or, some of both in different regions
of operation). There are two versions for the F-body and
I do not know whether either one is the one they sell for
the Corvettes. But if you had one, and peeled off the heat
shrink tubing from the soldered-in resistor, 2.7Kohms is the
value for the '01-'02 F-body version (red-violet-red-gold)
which is the most mixture-neutral. I think 2.4K was used
for the '98-'00 version (the lower value pulls the reading
to the lean side; bare, the 85mm MAF produces a very
rich reading with the F-body cal table). But I'm only vaguely
recalling the '98-'00 value while the other I have seen and
taken apart for myself.
Personally I would stay away from them all, I don't think
the "calibration" is very good. Unless you're ready to tune
and then I'd pull the resistor and use the truck MAF table,
good to go.
