Help anyone! I have a 2001 F250 5.4
I'm trying to install a module on to the IAT sensor located on the air intake.
I only need 2 wires to do this, but it seems the sensor has 4-5 wires on it. Does anyone know which 2 wires I should use? It is just a small chip to increase gas mileage. Please help and thanks.

 

umm what module and what chip?

 

Oh Lordy...that thing you're trying to install is crap. Please stop.

The IAT (Intake Air Temp) is an integrated part of the MAF (Mass Airflow Sensor).

These things usually just fool the computer to make it run lean or in the case of the same thing sold for power increase; make it run rich. Engine damage could be the result.

Air up your tires. Drive slower. Carry less weight.

 

I've been there with those chips. My advise is to send it back to where ever you got it from. The chip is not really a chip at all. It is a $.03 resistor inside a black box so that you can't see what it really is. It works by making the IAT sensor behave like a faulty IAT sensor. It tells the computer that the air going into the engine is colder than it really is. The idea is that the computer will advance the timing and produce more power. The reality is that the computer is already advancing the timing as much as it should, and by lying to it, you can get detonation, loss of power and economy, etc. It is also used as part of the MAF system, to help the computer know how dense the air entering the engine is, and how much fuel it should add accordingly. Because the computer will think that it is fairly dense, it will add more fuel than is actually required.

The O2 sensor will override the fuel issue, but the timing will still be off. You may not notice it much, but over time, you can get carbon build up, damaged emission components, warped valves, burned valves, melted pistons, rapid spark plug wear, etc. Its bad stuff.

I have used one of these so called chips before, and it actually made my 0-60 consistently slower. The engine tone changed, and it sounded slightly more powerful, and throttle response seemed better, but multiple test runs with a stopwatch and a long straight road showed it was significantly slower.