dogman

Hi

I have a Pro-m mass air kit, the computer inside their box has the following codes.

Line1 EEC-IV SFI-MA12A A3M1

Line2 F32F-12A650-DB-MR 134035

Line3 R1SM12AF14 314-0388 4F23


So my question is, What computer is this ???
Will your tuner work with this computer ??
Does the neat GUI software come with the purchase of the tuner ??

How do I physically hook up the tuner, the pro-m kit has a sealed box the computer sits in. Do I modify the box and run the cable out ??


Thanks

DogMan

Raymond_B

Hi DogMan, your A3M1 is in the A9L family. That means no problem the EEC-Tuner and the GUI software will work The GUI software is additional if you purchase the Pro version(50.00). Or you can just use the regular free version if you want. It can be downloaded from www.guieectuner.com If I remember right the processor sits inside the Pro-M case so you'll need to open it up and put the Tuner in the processor then run the Tuner's cable out of the case and inside the vehicle.

It's been a long time since I've messed with a Pro-M kit so I'm not sure if the Tuner's cable can run out with the 60 pin connector cable or if you will have to make an additional hole.

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Thanks,
Raymond
Performance Specialties
01 Cobra
95 Lightning (lots O' mods faster than the Cobra)

dogman

Hi

I downloaded the free-ware version of the software….

Now I have more questions…..

1) How do I specify my processor, or do I get a file for my processor with the purchase of the eec tuner ?
2) With the PRO version of the software there is a option to create a rom file. If I have a eprom burner can I create a chip with my modifications?
3) If #2 is correct, is it possible with one tuner to configure my stock lightning computer for shift points, burn a rom, then use the tuner for my mass-air computer?
4) How do I get the values from my computer (import rom file)?
5) What is the difference between clear, and configure eec-tuner options?
6) And now for an opinion question. My meter is calibrated for 24 lb/hr injectors. I bought the remote optimizer and larger injectors, is it better to use the optimizer to alter the air meter signal, or should I modify the fuel tables in the tuner? My gut feel is that leaving the signal alone from the meter, and changing the tables would give me a better signal to noise ratio from the meter ???

Thanks for your help

DogMan


[This message has been edited by dogman (edited 09-04-2001).]

Raymond_B

Hi Greg, here goes

1. I can e-mail you the .dat file for your A3M1, it's free

2. You can create a binary file, but you would have to have one of the chip tuner's software/hardware setups. It really was meant so people could share files.

3. Unfortunately not, see above.

4. You hook the Tuner up to the PCM and use the bundled Shiftmaster software to do a "Read Ford ROM". That creates a binary file (.bin) then you can import the binary into the GUI.

5. Clear downloads a blank file (no changes) to the Tuner, essentially reverting the vehicle back to the stock settings. Configure downloads any changes you have made to the Tuner.

6. Tuning with MAF's can be somewhat tricky. Basically if you get new larger injectors you would use the optimizer to scale back the voltage. Then build a transfer function to match the airflow.

The whole deal with "calibrating" a MAF is confusing. Here's what Pro-M does. Let's say you have a Mustang with the stock 19lb injectors. You modify it and decide you want 38's and a Pro-M meter. So Pro-M modifies the electronics of the meter so it will read a 50% lower voltage across the board. Why do this you ask ??? To get the larger injectors to work with the stock computer. The computer uses voltage from the MAF look up a corresponding air flow value in the MAF transfer function and make it's fuel calculations. Since it thinks a lower amount of air is coming in the engine than what really is (because of the reduced volatge) it calculates less fuel to be delivered never aware that it is actually pulsing larger injectors.

Reducing the voltage also has another effect. If you have an engine capable of moving enough air to need 38lb injectors (say 550 hp or so) then you would max out the the stock meter's electronics. Meaning that it can only measure about ~300 hp worth of air. That's a bad thing But the Pro-M has it's voltage scaled back by 50% so you could flow about twice as much air through it before pegging it.

But fooling the computer has it's drawbacks because of the reduced voltages the computer doesn't accurately calculate load and you can get part throttle lean spots and detonation. Sometimes idle quality is affected as well.

So where does the Tuner come in ? With the Tuner you can edit the mass air transfer function and input values that match your meter's actual voltage vs. air flow rate. Doing that can bring several things back in line and result in better performance. It does take a bit to get right, but generally worth it.

<whew>

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Thanks,
Raymond
Performance Specialties
01 Cobra
95 Lightning (lots O' mods faster than the Cobra)

[This message has been edited by Raymond_B (edited 09-06-2001).]

sstock

Raymond, your the best!
Maybe one day, I'll get the courage to stick the 30's in and go tuning. I'm just puter illiterate!
Steve

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94 Crimson #2826
Born May 6, 1994
NLOC member #343
Team Powerdyne,
13.49@ 102mph
Wanting 12's

'GREASED'

Raymond_B

Thanks Steve !! I can't take much credit though, Mike W. wrote an article a long time ago with his findings about MAF trickery

It is cool to watch it work on a car. I've been helping a guy get his Procharged 95 Mustang going. Among a long list of hi po parts it had a C&L 73mm MAF and recently toasted 2 sets of head gaskets. We put the wideband on it and things were all hosed up (super lean, retarded spark, low rev limit, etc). But after some MAF tuning we ditched the FMU richened it up to 12.5-12.7:1 added some spark and it flat out hauls butt. It's amazing how much spark an intercooled vehicle can tolerate.

Honestly you really don't need any mad computer skillz The hardest part is figuring out what everything means and what it does and how it affects other things. It doesn't really take that long especially when you have a good understanding of vehicles like you do.

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Thanks,
Raymond
Performance Specialties
01 Cobra
95 Lightning (lots O' mods faster than the Cobra)

dogman

Hi

Thanks A bunch…. I think I am starting to understand this stuff… Very scary…

The wife wants a new computer interface for her sewing machine, so that means I can get a new toy also..

Dogman

Raymond_B

Good deal Greg, that must be a hella sewing machine

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Thanks,
Raymond
Performance Specialties
01 Cobra
95 Lightning (lots O' mods faster than the Cobra)

93blksvtlightning

Originally posted by dogman:

The wife wants a new computer interface for her sewing machine, so that means I can get a new toy also..


You could always convince her that you will someday tune her sewing machine


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-KL
Black 93 #3194

Cruising along at Mach .80...
GM makes me