There's lots around. TunerPro ( http://gmecmedit.markmansur.com/ ) is a free version that I'm playing with. I've found .BIN files for virtually all combinations of years/engines/ECMs for the Fiero, but I've yet to find an .ECU file for either the 1226869 or 1227170 ECM. The .ECU file is needed to properly edit the .BIN file which is then burned to a new PROM. Has anyone come across a site where a Fiero .ECU file can be downloaded?

If not, it seems the only other editor that has a file to edit Fiero .BINs is TunerCAT http://tunercat.com/tnr_desc/do_tc.html

Thanks...

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3.4L S/C 87 GT www.fierosound.com
2002/2003/2004 World of Wheels Winner &
Multiple IASCA Stereo Award Winner

There is a link off Rockcrawl's website (Fieroaddiction) to download GmePro and the Fiero defination file for it. It is one of the best editors out there.

quote Originally posted by Cooter: There is a link off Rockcrawl's website (Fieroaddiction) to download GmePro and the Fiero defination file for it. It is one of the best editors out there.

Thanks, but I already checked out GMEpro. It uses it's own .EPE format for editing .BIN files. It doesn't seem to work on a Windows 2000 Pro machine. I don't have a DOS box to play with it on.

I've looked at this FLASH based PROM upgrade http://misterbill.homeip.net/aboutprominator.asp Quite a few Camaro owners at http://www.3rdgen.org have been using this with great success. But you still need a .BIN editor to modify your codes.

[This message has been edited by fierosound (edited 08-23-2004).]

quote Thanks, but I already checked out GMEpro. It uses it's own .EPE format for editing .BIN files. It doesn't seem to work on a Windows 2000 Pro machine. I don't have a DOS box to play with it on.

I searched for the ecu file for tunerpro months ago and never found anything for the 6869m or 7170 ecm. Looks like it could be a good app if that could be developed for our ecm's. Later on, I found out about GMEPro and Tunercat. I ended up buying both. These days I use GMEPro exclusively for the programming and occasionally use the Tunercat when I need to compare BIN files.

I'm far from an expert in this area but you can't do much better than GMEPro for programming our proms. Since your running Win2000pro, just make a DOS boot disk for your system or use a Win98 boot disk to get you to a dos prompt. Good luck...

Rod

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My X86GT Site

I run GME pro on Windows XP pro. Click it from Windows and it opens a dos box. I do most of my editing with an old 486 and Win 95. I'm not sure why it would work on 95 and XP but not 2000.

XP has a far better compatibility mode than 2000pro... ive run a ton of programs in XP that wont run in 2000 but will in 95/98/ME

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'86 Fiero GT

www.KylesFiero.tk www.XoticRydz.tk

quote Originally posted by rockcrawl: I run GME pro on Windows XP pro. Click it from Windows and it opens a dos box. I do most of my editing with an old 486 and Win 95. I'm not sure why it would work on 95 and XP but not 2000.

There shouldn't be a problem running GMEPro in any DOS window but if someone gets an error message send it to me and I will look at it. It's pretty loaded with error messages. Also, try running it in full screen exclusive mode. If that works, then it's the OS and memory allocation (odds are....)

Terry

[This message has been edited by TK (edited 08-23-2004).]

OK, I got GMEpro working now in a DOS window.

I've looked at this FLASH based PROM upgrade http://misterbill.homeip.net/aboutprominator.asp I got an email back from the developer, and this should fit and work with the Fiero ECM's. The Pro version allows "on the fly" reprogramming. This is possible when you simultaneously run a PROM editor to make the changes and ALDL to see what the changes are doing. It definitely speeds up the tuning process.

If desired, once you have a final tune, you can always burn a PROM and remove the unit and use it to tune another car.

quote Originally posted by fierosound: OK, I got GMEpro working now in a DOS window. I've looked at this FLASH based PROM upgrade http://misterbill.homeip.net/aboutprominator.asp I got an email back from the developer, and this should fit and work with the Fiero ECM's. The Pro version allows "on the fly" reprogramming. This is possible when you simultaneously run a PROM editor to make the changes and ALDL to see what the changes are doing. It definitely speeds up the tuning process. If desired, once you have a final tune, you can always burn a PROM and remove the unit and use it to tune another car.

As far as I know, the only way to make changes to the prom program on the fly is with an emulator, a flash memory based box whos harness plugs into the prom socket and is hooked to a laptop which has the editing software. .

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87GT 3.4 Turbo Best 0-60 5.2 seconds
http://www.turbochargerpower.com/turbo.htm

quote Originally posted by Dennis LaGrua: As far as I know, the only way to make changes to the prom program on the fly is with an emulator, a flash memory based box whos harness plugs into the prom socket and is hooked to a laptop which has the editing software. .

Thanks Dennis. That's exactly what it appears to be.

[This message has been edited by fierosound (edited 08-24-2004).]

If you decide to use an emulator, make sure you disable the checksum (experimental byte) in the eprom or you will get a checksum error when you restart. This disable flag is a location in the eprom for the ECM not a disable of the checksum in the eprom burner. The Fiero uses the checksum. Not all applications do. Most do.

The checksum in the eprom is the sum of all of the bytes except for the two that are the checksum. When the ECM starts up it will calc the checksum and compare it to the two bytes in the eprom field. If they mis-match it will give you the error 55 (or 54).

When you use an emulator, you are changing the cals on the fly. That's fine until the ECM does a reset (lost my mind) or you cycle the key. Unless you keep changing the checksum in the eprom everytime you change a cal, it will be wrong. If you never cycle the key with the emulator (reset the ECM) or the ECM never does a reset (which happens all of the time, you just might not notice it) then you are fine.

quote Originally posted by Dennis LaGrua: As far as I know, the only way to make changes to the prom program on the fly is with an emulator, a flash memory based box whos harness plugs into the prom socket and is hooked to a laptop which has the editing software. .

"The PROMinator is NOT an emulator...it is a PERMANANT replacement for an EPROM"
A regular emulator has to have power not to lose memory.

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'84 Fiero Sport Quad 4 coming soon
'87Blue GT 3.4L Swap Completed!!!!!!!!
http://www.lasvegasfieroclub.com/
Rate me if I'm usefull

I have seen at least two other versions of these with more or less the same price ($150 to $180). I think they would be great for dyno tunning.

Anyone knows if a Fiero ECM could control a TPI V8? If not why exactly? TIA

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Palm Beach Fieros
http://pbfieros.tripod.com

I've been using Xtronics ROMulator with Tuner C.A.T.S. RT-Tuner It allows you to make changes on the fly. You simply remove your EPROM and plug in the ROMluator, load your bin file, start driving and make your changes. I haven't screwed things up to bad yet ( I'm just learning about EFI ).

Steve

quote Originally posted by spearce: I've been using Xtronics ROMulator with Tuner C.A.T.S. RT-Tuner It allows you to make changes on the fly. You simply remove your EPROM and plug in the ROMluator, load your bin file, start driving and make your changes. I haven't screwed things up to bad yet ( I'm just learning about EFI ). Steve

That's the one I like. I may get it later but also would like one of this below;
http://www.innovatemotorsports.com/xcart/customer/product.php?productid=16139&cat=248&page=1

quote Originally posted by Alex4mula: I have seen at least two other versions of these with more or less the same price ($150 to $180). I think they would be great for dyno tunning. Anyone knows if a Fiero ECM could control a TPI V8? If not why exactly? TIA

The Fiero ECM doesn't support changing the number of cylinders so the answer is no. That's embedded in the processor ROM and it's difficult to change. That's called running "Romless".

Terry