calibrating maf sensor

[4POINT0SOHC]

how do you calibrate a new maf sensor to run correctly on your x? just picked 1 up off an f150 5.4 and it is alot bigger and the truck runs great with it but at w.o.t. it drags...thanks for any help guys.

 

[2000XPLORERSPORT]

how do you calibrate a new maf sensor to run correctly on your x? just picked 1 up off an f150 5.4 and it is alot bigger and the truck runs great with it but at w.o.t. it drags...thanks for any help guys.

did you disconnect the battery before changing the maf? if not, take the negative wire off for maybe 10-15 minutes, then reconnect it. this will re-set the computer. then as your driving, the computer will re-learn itself with the new maf.

 

[techieman33]

did you disconnect the battery before changing the maf? if not, take the negative wire off for maybe 10-15 minutes, then reconnect it. this will re-set the computer. then as your driving, the computer will re-learn itself with the new maf.

NO, that will not work. To fully re calibrate for a new maf sensor you will need to get a new computer tune. Most people on this forum, myself included will recommend you go through James Henson for that. He's a great tuner and has tuned a lot of explorers. He goes by Jah81592 here on the forum, or you can visit his website www.hensonperformance.com

 

[2000StreetRod]

get a tune

As techieman33 stated you need a tune if you change the size of your MAF sensor. The sensor element is a heated wire that measures airflow by its cooling effect. A larger diameter enclosure results in lower airflow speed than the stock unit for any given engine speed and load. Your PCM with the stock tune will think the engine is under less load than actual and will adjust the fuel mixture too lean and advance the timing too much. The higher the engine speed the leaner your mixture will be. Fortunately, your SOHC is equipped with a knock sensor that will retard your ignition timing when it detects knock and prevent detonation.

I am a retired electrical engineer and spent hundreds of hours designing, prototyping and testing an electronic circuit to make my 90mm MAF look like a stock 55mm MAF to the PCM. Trust me, the only way to go for improved performance, reliability and driveability is with a custom tune.

 

[4POINT0SOHC]

Thanks guys for the info! I kinda figured the tune would do it, i was just hoping there was another way around it...lol