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1987 - 1996 F150 & Larger F-Series Trucks 1987 - 1996 Ford F-150, F-250, F-350 and larger pickups - including the 1997 heavy-duty F250/F350+ trucks

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  #1  
Old 01-28-2008, 10:02 PM
RC Dan RC Dan is offline
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All y'all MAF conversion gurus. A9 vs. truck ECM

I've been following this thread http://www.ford-trucks.com/forums/59...-write-up.html
and alot of other information i've found.

I'm doing a mass air conversion on my '95 F150, 302. My only real debate here is...

Is there any advantage to using an A9 series ECM over the standard truck MAF ECM?
Like, fuel and spark tables?

I know about the A9 using a dual O2 sensor reading, but the truck one still retains a knock sensor. You can get chips for either one pretty easy so thats not a debate really.

BTW, heres what I'm doing to my engine. http://www.ford-trucks.com/forums/69...hing-else.html
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  #2  
Old 01-28-2008, 11:18 PM
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You got choices because you have a standard tranny.. could use either computer. But once you get beyond the stock calibration you'll need a tuner, and with that you can tweek any parameter you like so it won't matter what the stock settings are.
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1990 5.0HO AOD XLT X-Cab F150 3.55LS, 1994 3.0L 5-sp x-cab Ranger 3.45, 2004 3.0L 5-sp X-cab Ranger Edge 4.10, 2004 2.5L 5-spd Subaru Legacy
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Old 01-29-2008, 05:06 PM
RC Dan RC Dan is offline
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But, is it true the Mustang computers have a more aggressive stock tune?

So basically, for safety's sake, I should just stick with the truck ECM. I'll have a knock sensor so detonation won't be an issue, and I won't have to swap around the wires.

What about transmission codes? I don't think I'll have any luck finding a MAF truck with a manual to steal the computer out of.
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  #4  
Old 01-29-2008, 06:21 PM
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ma94xlt ma94xlt is offline
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The stock mustang computers are pretty good in stock tune. I ran a stock A9P in my 86 mustang, with a blown stroker. All I had with it was a Crane ignition box with a boost retard and ran 11.19's @ 122 with it.. Wish I could run mustang computer in my 94 XLT. I think the computer in the trucks has to doing with the pining problem, in older motors. I have tired everything to stop the pinging on my truck to no avail.. Bad thing is I can't swap EEC's cause of the AODE tranny....
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Old 01-29-2008, 10:40 PM
shuttlevalve shuttlevalve is offline
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i can pass on some info on mustang computers. 89-93 A9L is the best. Steer clear of the 94-95 computers. They have added tables to pull timing out at the shift to reduce torque to improve drive train life even in the manual transmissions i hear
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Old 01-29-2008, 10:42 PM
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More timing is not necessarily what you want in a truck, they are a lot heavier than the cars so the motor won't tolerate as much timing before detonation sets in. From my experience it only takes 1 sensor out of calibration to make a motor extremely sensitive to pinging, and that doesn't necesarily mean a bad or faulty sensor. If the TPS is slightly misaligned or MAF sensor incorrectly calibrated the readings it supplies to the computer will be off, and that may be enough to cause the computer to apply too much ignition advance. This is something you may never know unless you have a datalog generated from a tuner or dyno shop to see what the computer see's realtime.
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1990 5.0HO AOD XLT X-Cab F150 3.55LS, 1994 3.0L 5-sp x-cab Ranger 3.45, 2004 3.0L 5-sp X-cab Ranger Edge 4.10, 2004 2.5L 5-spd Subaru Legacy
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Old 01-30-2008, 10:13 AM
RC Dan RC Dan is offline
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I check my engines over very well with changes in ignition or other components that may affect. If I feel it looses power or starts to ping or detonate, I check everything over again. I'll pull plugs, check for obvious shorts, check codes, and check the calibration on the TPS. I usually run 13* advanced.

To repeat the question, is there any way to stop transmission codes from appearing if I use a computer from an automatic truck?

And...
Is there any way to add a knock sensor to an A9 computer?

BTW, I know it doesn't matter much but I would be using an A9P that came out of a '90 or '91. If I used a truck computer, it would be out of a '94 or '95 MAF truck. Either way I go, I'm getting a complete MAF truck harness.
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'97 F150,
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  #8  
Old 01-30-2008, 10:53 AM
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Quote:
Originally Posted by RC Dan
To repeat the question, is there any way to stop transmission codes from appearing if I use a computer from an automatic truck?

And...
Is there any way to add a knock sensor to an A9 computer?
You should be able to accomplish both with a tuner or custom chip.
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Paul (Conan) O'Brien

1990 5.0HO AOD XLT X-Cab F150 3.55LS, 1994 3.0L 5-sp x-cab Ranger 3.45, 2004 3.0L 5-sp X-cab Ranger Edge 4.10, 2004 2.5L 5-spd Subaru Legacy
1996 Kawasaki ZX11D, 2004 Honda 599, 2008 Kawasaki KLR650
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  #9  
Old 01-31-2008, 01:36 AM
stangbanger stangbanger is offline
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Can these S/D ford trucks be modified somewhat without needeing maf"? just surious i know the mustangs have their own s/d cams and what not. But can mild head porting, and s/d cams, and some intake work be done without problem?
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Old 01-31-2008, 02:24 AM
eco eco is offline
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Quote:
Originally Posted by stangbanger
Can these S/D ford trucks be modified somewhat without needeing maf"? just surious i know the mustangs have their own s/d cams and what not. But can mild head porting, and s/d cams, and some intake work be done without problem?
You can get away with a little bit, but it's best to have a tuner if you plan on doing much with a SD motor.
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  #11  
Old 02-01-2008, 01:01 PM
blackout5.0 blackout5.0 is offline
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You can get a chip burned or use a TwEECer for most of the ECMs.
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Old 02-06-2008, 02:17 AM
stangbanger stangbanger is offline
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a tuner can tune ? in an sd computer setup?

-Randy
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  #13  
Old 02-06-2008, 02:22 AM
stangbanger stangbanger is offline
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I want to refresh my 302. but i would like to put a mild cam in it and get a little more oomph out of her with some had shaving or bigger valves and some mild portwork, and i dont want to have to switch to MAF! or get out of those 19 lb injectors. which i should be a long way from doing anyways my goal is to have a decent truck thats reliable, and i can take offroading alogn with driving it to work it will be driven 3 times a week maybe. i plan to put some 35 12.5 bfg mud terrains on it, and some kind of 6 inch lift. i have a msd 6al with the ford tfi plug that i am gonan throw on there with a set of taylor thundervolt wires, and a msd coil that should help a pinch. But i wanna get some more pep from the heads cam and intake side. somethign relitively inexpensive but enough to gain 30 40 more horses. After all said and done i will re gear the front and rear with some 430s or something.
-Randy
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  #14  
Old 02-06-2008, 02:49 AM
eco eco is offline
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Quote:
Originally Posted by stangbanger
a tuner can tune ? in an sd computer setup?

-Randy
Yup. You can reprogram the computer to match any mods done, if a tuner is available for your application, which there should be.
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Old 02-06-2008, 08:05 AM
blackout5.0 blackout5.0 is offline
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Quote:
Originally Posted by eco
Yup. You can reprogram the computer to match any mods done, if a tuner is available for your application, which there should be.
x2.
Check into a TwEECer.
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Old 02-06-2008, 08:05 AM
 
 
 
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