[88stang_dreams]

Does it matter if you have a auto or manual ecm? Reason why im asking is cause im gonna do the maf conversion and i know some one with a 1992 a9p ecm and it is for a 5.0 motor but its an auto and wonder if it would make a difference? Cause i know on my 240sx i can switch from auto to manual ecu and doesnt affect the car at all. So any help would be great.

[TurboLX]

ecm?? last time i check i thought it was EEC

[neverfastenough1]

You can use it. The manual comp has more performance, and the auto is geared toward fuel mileage.

[88stang_dreams]

like what kind of performance loss are we talking about? i plan on getting gt40 heads tfs stage one cam msd 6al and coil. so would there be a big loss in power if i use a auto eec/ecm/ecu?

[TENGRAM]

Originally Posted by neverfastenough1 You can use it. The manual comp has more performance, and the auto is geared toward fuel mileage.

that's a really common misconception. truth is the auto actually offers more timing in the lower rpms and is equal to the a9l (performancewise) in all other areas. check this website out for more info: http://www.freewebs.com/vristang/a9lvsa9pvsx3z.htm

[neverfastenough1]

Originally Posted by TENGRAM Originally Posted by neverfastenough1 You can use it. The manual comp has more performance, and the auto is geared toward fuel mileage. that's a really common misconception. truth is the auto actually offers more timing in the lower rpms and is equal to the a9l (performancewise) in all other areas. check this website out for more info: http://www.freewebs.com/vristang/a9lvsa9pvsx3z.htm

Yeah. my bad I had it backwards, but was right about you can use it. The auto does offer more timing to help it off the line. You can't use a manual EEC in the auto for this reason because it could stall at idle in gear. Maybe I got it right this time.