In my research I've learned I have a 1227165 ECM, and require a $32B ID, which I found on the Internet. Can I pull that off my own ECM? I have TunerPro and I've loaded in a downloaded 87 350 Bin, a 32B adx and a 32B xdf file. I can see a scaler list, a flag list, and I forgot the name of the third list (I'm not near my computer) I honestly have no idea what to do next. Ive also got the ALDL cable and the ALDL app for my tablet so ill be able to data log.

Some of the scales seem self explanatory like engine speed fuel cutoff. I assume whatever number is put there will cut the fuel, so it's basically a Rev limiter. I just don't know where to begin with timing and fuel as I have bosh 3 24# injectors, a very mild cam, headers etc etc, nothing to crazy.

Change the injector flow rate and burn a chip. See how it is, the BLM values will show you how close the fueling tune is.

If you have the injector compensation values for the Bosch injectors, that is also a worthwhile change in the BIN.

RBob.

This is where I'm stuck. So I have those three files in the tuner. Once I make changes to any one of those 3 categories, that's what I burn? The fuel tables I sort of get, in theory. Just not sure what I adjust exactly or what is it I change. Sorry, it's one of those things that I'll get, once I see it type of things. I've also read a lot of posts that mention this $6E as something that works with the 87. So I found the files in the pic. Only I'm not 100% sure of what to do with them.

A lot of '86-'88 TPI MAF folks have moved to $6E with good results. The MAF tables in ARAP seem to be particularly good. Being a y-body BIN changes do need to be made to use it in an f-body.

There is also the issue of extended hot cranking times due to the DRP ignore table. Which is easily corrected.

As for editing the BIN, yes to burning the newly saved BIN. Make changes, save them (a new file name helps), then burn that BIN to a chip.

There is a Tuner Pro tutorial on my site, see the Intro to Tuning Part 1 (first half only).

RBob.

I'll definitely read that. Thanks. So I'd burn all 3 $6E files and completely ignore the 32B correct?

Use only the $6E files, none of the $32b files.

The .BIN is the binary that is edited and burned to a chip
The .XDF is the road map, or definition file, that Tuner Pro uses to show the tuner the various parameters & tables.
The .ADS file is for Tuner Pro to understand the ALDL stream and how to display it.

RBob.

Ahh, gotcha. The ADS and XDF are basically translators for us and the software to understand what's on the BIN, and to manipulate it. Starting to make more sense now. Thanks a lot. By the way, where it says single fire and double fire fuel injector size @40, would that now be changed to 24 instead of the 22.36 that's there now? Not sure why it gives an option for sungle and double fire. Is our system not a single fire batch fire?

I've been studying this ARAP Bin. My 87 has been swapped over to a T5, 5 speed. Am I still best to tweak the ARAP or should I be running something else? I've been comparing the ARAP to the APYS which is a 5.0 5 speed F-Body. I figured the ARAP would be better as my car is a 5.7. Or do I have it all wrong? I've been comparing the two Bins. For instance, the APYS has Idle speed adder park/neutral set to 0.00 whereas the ARAP has it set to 50 RPM. Is this what I should be doing? Cross checking the manual vs auto parameters and switching them accordingly.

> Is our system not a single fire batch fire?

No, normally it is run in double fire batch mode. Double fire being that the injectors are being fired twice within a per-cylinder 4-stoke cycle. Which ends up having the injectors fire once per engine revolution.

Single fire mode is used when the PW gets small, the PW is doubled and then fired once per 4-stoke cycle. Which is once every two engine revolutions.

> For instance, the APYS has Idle speed adder park/neutral set to 0.00
> whereas the ARAP has it set to 50 RPM.

There is no P/N with a stick transmission. So no need for an adder to it.

RBob.

I've taken the 5 speed specific parameters from the APYS and copied them over to the ARAP. replacing what was there. Hopefully that's a step in the right direction as far as getting my feet wet in this part of modding.