2002 Ford Ranger 4.0 Twin Turbo Kit.
Changing over a MAF to a MAP sensor using the SMT6
We are doing the change over on the 02 Ford Ranger 4.0 V6 Twin Turbo Pick up truck.
What we have here is a 0 to 5 volt analog signal coming from the Mass airflow sensor.
Before taking any thing apart we monitored the MAF to confirm the signal was analog and increased voltage with engine speed. We also noted the idling voltage and WOT voltage.
. The original MAF sensor was for the original naturally aspirated engine, so we decided to replace it with a 1 bar GM, 0 to 5-volt analog MAP sensor
We have perversely installed the SMT6 in this vehicle. The SMT6 analog input is the blue wire and the output to the ECM is the violet wire. The voltage is controlled in the F1 analog map in the SMT6 software.
Using 2 channels of our voltmeter, we then attached one channel to the original MAF meter out put wire and the other channel to the violet wire coming from the SMT6.
We ran the engine with the MAF sensor connected to the ECM and the SMT6 wire unattached except for the voltmeter. With the engine idling we entered the appropriate values in the SMT6 F1 analog map until we matched the values of the MAF. We did that at all engine speeds. We then cut the MAF wire and attached the ECM side to our MAP sensor. Hey, it runs just like it did before. Lets go to the DYNO and tune it.
TEST with 6 lbs of boost
Old Bridge Raceway Park time slip
Race weight 4068 with driver
Old Bridge Raceway Park time slip
7 lbs of boost
New Best, leaving @ 1800RPM 13.58 ET 102.65 MPH
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