Rage

I went to connect the MAF from my LT1 to the connector on the stock 87 lid and I ran into a problem. the LT1 MAF is a 3 pin connector, my stock MAF is a 5 pin. Is there anyway to splice my old sensor into the new? What did you do?

89Vert

so are you tring to run your 87 ecm with LT1 MAF?

cause that won't work,
the MAF's don't work the same

jah1542

Since I'm not a third gen guy, I'm probably wrong, but weren't all third gen engines speed density?

Rage

No and No. Im running the LT1 ECM and wiring harness but the MAF plug itself on the LT1 harness is a 3 pin, the receiving part of the MAF on my stock lid is a 5 pin.

I believe MAF was used on all TPI units until 1990, then they switched to SD.

LWillmann

You're probably going to need an LT1 MAF then.

89Vert

so you are tring to run stock maf with LT1 ECM and harness?

cause that won't work,

have to get the LT1 MAF

89Vert

for some reason they went SD in 90,

IMO MAF is a better,
but on a 3rd gen MAF was a limited 16kb file
when they went to SD it got a larger 32kb file, which allows for better tuning

fast 93 z

2 pins out of the 5 pin connector may be for a IAT sensor.

89Vert

maf burn off I belive, they have an IAT sensor on the plenum

fast 93 z

Oh ok...I have seen some Mafs have the IAT built into the sensor.