Car still runs fine with MAF DISCONNECTED!?

when i put my intake on i forgot to hook the MAM back up and didnt realize it for 2 weeks. car ran fine. definetly runs better now though. kinda wierd though

The car will run without the maf. I accidentally drove mine over 300 miles from Knxoville TN to Augusta GA with it disconnected - averaged about 23 mpg! Turns out the new ProM maf had a rubber seal in the female end, and my male plug had a rubber seal around it too - it would plug in, but not fully connect. Took us a day to figure it out. Absent the maf, the computer looks at temps, rpm, barometric pressure, and tps sensor readings to 'guess' (calculate) what amount of fuel should be injected. So if the engine hasn't been wildly modified it can actually run pretty well without the maf. Of course as weather conditions change, pressure, elevation, etc., the maf will do a much better job than those calculations will. Check your voltages on the maf output to be sure it's working, then go ahead and plug it in and drive. It'll be doing it's job unless you've missed something on the mass air conversion.

The car should run pretty good with the MAF unplugged, because the computer has switched to limp mode because the computer is not receiving a signal from the MAF, which means the computer is using preset fuel/air tables. I had a problem on my 93 LX 2.3, it was running like crap and it turned out to be a bad MAF sensor. With the sensor unplugged, it ran fine but the check engine stayed on constantly (because the computer wasn't getting a signal from it.)

You probably won't notice any difference now that its plugged in.....so you should be good to go. The reason the Check engine light probably didn't come on is because on the 87-88 stangs (originally speed density) the light doesn't illuminate when a malfunction occurs. If you pull the codes, it should come up as a malfunctioning MAF sensor.

Hope this helps!