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Originally Posted by 240sxredtopdrift
ok i checked my wiring. Redtop with ka24e MAF.
A +12
B ground
c Signal
this is right....? i think so.
volts read
key on .8v
idle 1.5v
3000 no load 2.??V
full throttle on street it can go up to 7V if i push it?!?!?!?
i rechecked for piping leaks(pressure test to 15psi) and there is none!
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Your Wiring is correct!
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Originally Posted by slider2828
The KA MAFS, need to be rewired and NO the MAFS will not go above 7Volts. Nothing on your car pretty much should god 7 VOLTs. Anything that high you run the risk of burning out your ECU. Because the MAFS is directly connected to the ECU, you cross those wires, your ecu is gone. I have don't it, sparked the MAFS wire, ECU was gone. Idle should not be 1.5, unless you have a Z32 MAFS, highest flow you can get is 5V. I tune my maps by tapping the Hot Airflow Input. I ran my SR20DET at 14PSI (with proper upgrades) and NEVER got above 5V on the stocks MAFS, so something is wrong. Get a new mafs.
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Correct, I topped the stock mafs @ 13psi. It did try to read more, but whatever it was saying the S-AFC didn't like.