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#1 |
![]() Join Date: Jan 2024
Location: Boston, MA
Posts: 165
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EDIT SOLVED: I had my buffers backwards for a 32KB program on a 64KB chip. My Chip Addressing and Buffer Addressing were reversed.
It needed to be. Chip Addressing: 8000-FFFF Buffer Addressing: 0000-7FFF After fixing that the file looks good. ![]() Good ole' web archive: https://web.archive.org/web/20201128...using-offsets/ --- original post below --- I'm trying to make a backup of the custom chip in 1994 #150 (Corey Henderson tune) for archival purposes in case anything ever happened to it. I purchased a new chip reader/writer as my old one I used for L98 tuning 20 years ago was not even USB based. This is what I purchased and it's essentially a clone of the Moates version. After Craig closed up shop and retired these folks have been carrying the torch forward. https://boostednw.com/chips-and-adpt...ner-programmer It is a 27SF512 chip in the car in a Moates adapter, a pretty typical setup. If I read the chip with a 0000-FFFF buffer I end up with a 64KB file, but my understanding is the $F0 program should be 32KB. I changed my buffer to 8000-FFFF to get a 32KB BIN file as I thought the correct buffer was the last 32KB of the chip. I do have the chip with its notch towards the ZIF handle and the opposite end of the chip aligned with the "bottom" of the reader/writer. Loading the file into TunerPro looks.... odd. Tables aren't smooth and things like fuel cutoff RPM show "60", yes sixty, instead of ~7,000 the stock BINs show. Injector flow rate is "0.39" which is also obviously wrong. It has probably been close to 10 years since I messed around with these things. Am I forgetting an obvious step? ![]() I'll toss it back in the car to make sure it didn't somehow get zapped in the 15-foot walk from the car to the laptop. ![]() Last edited by scorp508; 04-13-2024 at 06:49 AM. Reason: Solved |
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#2 |
![]() Join Date: Jun 2022
Location: Virginia
Posts: 82
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Glad you got it solved.
For anyone else that might be looking at getting into this aspect of the cars, you can also get a chip reader from Burton Racing that is plug and play with TunerPro RT https://www.burton-racing.com/collec...ts/chip-burner Both it and the one from BoostedNW can erase/rewrite the 'fake SST' chips made in china by switching to a 14v mode. |
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#3 |
![]() Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,153
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Remember there is an $F0 and $F0A
Also what are you using as a logger?
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1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978 |
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#4 |
![]() Join Date: Jul 2017
Location: West Chester, PA
Posts: 378
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Interesting. Would like to know more about what exactly is on the EEPROM in my ZR-1. Is there any other firmware in the ECU besides EEPROM? So far aware of the motorla chip, and the 2 proprietary Delco chips in the ECU, wondering what else goes on in there?
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1990 Black/Black ZR-1 #1155 1993 White/Red coupe (Regrettably sold) ![]() |
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#5 | |
![]() Join Date: Jan 2024
Location: Boston, MA
Posts: 165
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The chip ID is set to 9011, same as BMCB, so I assume it's F0 based on this table.
https://zr1.net/forum/showpost.php?p=336837&postcount=6 Quote:
I may see if BoostedNW knows of any LT5s being datalogged with this, though it may need a 12->16 pin adapter for the OBD2 style port. https://boostednw.com/Datalogging/gm...-gm-datalogger
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1987: Z51 Coupe, Z51, 4+3, Yellow / Graphite 1994: ZR-1 #150, Admiral Blue / Black 2015: Z06 Coupe, Z07, M7, Arctic White / Red |
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#6 |
![]() Join Date: Jan 2024
Location: Boston, MA
Posts: 165
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Jeff, is ALDLDroid still active? Most of the links for hardware to use with it on their webpage are long dead.
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#7 | |
![]() Join Date: Jul 2007
Location: Bartlett, IL
Posts: 7,153
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I use an Android phone and a USB ALDL cable. I have a Bluetooith adapter but never really used it. most of the bluetooth devices I think were Arduino based. Cable seems to work the best for me. nice thing with the direct cable I have, the phone powers the adapter and I don't need the 12v Cigar adapter
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1990 Corvette ZR-1 #1051 Watson Headers (2" Primary) - Borla Catback Late Model IH - Plenum Coilovers - 4.10s Custom Interior NCM Lifetime Member #978 |
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Tags |
$f0, custom, ecm, prom |
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