LB9Formula89

I need some help from anyone who uses the signstek TL866CS minipro programmer. I looked over numerous threads but I haven't seen anything to help my specific issue. Some background info:


- 1989 LB9 T5 Formula
- Remanufactured ECU (replaced the 165): 16198258
- PROM ID (datalog readout): 9361
- PROM type SHOULD BE: 27C128
- Using the minipro hardware and software to read my stock (if its even stock) .bin
- Using tunerpro to datalog and attempt to practice tuning (trying to get my current .bin to start doing so)


So basically, I can't identify my EPROM manufacturer just by looking at it. I don't see any kind of manufacturer name on it. I attached a picture for reference.




There's nothing under the tape (had to cover the window because the EPROM was uncovered when I pulled out the memcal) and there was also nothing written on the little cover that usually covers the EPROM window. So can anyone tell what the PROM type would be by looking at this (27CXXX)? Or even the manufacturer? My second and last question is IF this even was a Delco Electronics EPROM how do Miniprom users read the .bin? I don't see Delco listed as a manufacturer option when selecting the device IC and I get an error when trying to read the EPROM. When I was trying to figure out the EPROM type last night I checked out a BCC lookup table I found online and the PROM ID from my datalogging matched a PROM ID from either a V6 '87 car or a '93. I'm pretty confused up to this point and was wondering if anyone could provide any kind of direction. I would really like to have my current calibration file before starting with tuning. Thanks in advance. : )

ULTM8Z

another option would be to let us know your four letter broadcast code (i.e. like AUJP, ANHT, AXCN, etc). Most likely the .bin exists online or someone else already has it.

LB9Formula89

How do I know what that is? I thought that would be somewhere on the EPROM itself but I don't know of another way of telling what it is.

LB9Formula89

Didn't explain it well but I did attempt to get the broadcast code by referencing the PROM ID datalog readout (9361) on a BCC lookup table I found online... but what I saw was an '87 V6 broadcast code and 3 different '93 broadcast codes. That didn't really make any sense to me.

ULTM8Z

My guess is one of the gurus here could tell you based on the vehicle description... engine, tranny, axle ratio,...

LB9Formula89

The other problem is the car has had some modifications done to it (Most by previous owners). CAI, headers, flomaster muffler, 3" pipes out the back, 9 bolt rear from an 85 IROC (3.27 gears). So using the broadcast code from an 89 T5 LB9 with whatever gears would be a starting point BUT I'm not entirely sure if there has or has not been a re-calibration already. And I'd like to get the best starting point possible. The main issue is getting the minipro software setup with the correct device (Prom type) to read the bin. My best guesses are (27C128,27C512,27C256) but my guess of manufacturer (delco) isn't even listed in the minipro software. So my hope was someone has tried reading a delco EPROM on this programmer before and can tell me what works.

ULTM8Z

None of those mods are drastic enough to warrant not using the stock bin as a good starting point.

Vanilla Ice

Cal ID is on the ecu case. http://www.gearhead-efi.com/Fuel-Inj...Information-6E
Do you have this? http://www.moates.net/hdr6-memcal-re....html?cPath=64
Once you hook it up it should be pretty self explanatory... I did it with the same prom reader/writer but don't remember anything special about it.

LB9Formula89

Vanilla, my ECU is the remanufactured 16198258 (replacement for the 165). There is nothing listed on the ECU but the ECU number itself. I do have the moates HDR6. I understand how to use the minipro software just fine but in order to read the EPOM I need to first tell the software what device I'm trying to read. And I'm assuming it's delco but delco is not listed in the software. I got a response from someone in another post saying they used the manufacturer "microchip" 27C256. But haven't tried this yet.

LB9Formula89

Also, the gear head thread you linked is great. Thanks for that.

Vanilla Ice

This is correct. You still need the Cal ID in order to open up and look at the bin in tunerpro.

LB9Formula89

Well, I know that $6E is the Cal ID for the '165 ECU in '89. Not sure if I can use the same ID and it'll just work... I know that the ECUs aren't THAT different but I have no idea what Cal ID this particular EPROM has. I guess when I load the bin into tunerpro with the $6E definition files we'll see if it's the correct Cal ID or not.

RBob

iTrader: (1)

When reading a PROM the manufacturer doesn't matter. As we know the ECM doesn't care either.

The manufacturer of the PROM only matters when burning it.

If it is a Delco PROM then it is either a '128 in size or '256 in size. So read it twice, once as a '128. Then again as a '256 but set up the offsets to read and save the top half.

Once you look at the two BINs in TP it will be obvious what PROM size it is.

RBob.

ULTM8Z

Ok, so I grabbed my Minipro and started playing around with it. I only have $8D hardware available, so not sure if this will work on yours...

But, using a TI SMJ27C256, I'm able to read my factory PROM just fine and open it in Tunercat and Tunerpro.

Also, SST27S256 works as well.

It may be the case that the software doesn't care what brand the chip is.

You have to also uncheck the box for "Check device ID" at the lower left of the main window. For whatever reason, the software doesn't read the chip with that box checked. This checked box could be the source of the error you're getting.

anesthes

iTrader: (12)

Why don't you buy an Ostrich and toss an updated bin on it ?

I have handful of hot $6E bins I used to use on iron headed TPI cars back in the day, many of them would work well for you. All manual bins.

-- Joe

LB9Formula89

RBob and ULTM8Z,


Thanks for your help. Been pretty busy over the past week so I haven't tried again yet but ULTM8Z I think you're right. The error message I was getting did allude to that but when I did uncheck the box it was still showing blank. Anyways, should be able to figure it out today.


anesthes,


I am pretty green still (so far all I've done is look at stock bins and compare them to modified bins and a little bit of data logging) so I am slightly familiar with the Ostrich but I felt that I would get to that point eventually. If you have modified bins that are useful for me then that would be great! Sent you a message!

ULTM8Z

Anesthes is right in that ultimately you'll want to get an Ostrich. That plus the WB O2 plus hooking the WB up to Tunerpro... it's been an invaluable tool to get where I currently am with my tune.