98GSXtreme07
15+ Year Contributor
- 668
- 1
- Nov 11, 2007
-
Denham Springs,
Louisiana
Yep, I sure do. Right behind, next to, the OBDII port.
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EcuFlash is free flashing software that allows you to read, modify and write ROMs to ECUs. So far mainly used by Evo and Impreza crowd, seems it has finally gained ability to flash 98/99 ECUs as well. GSXDNA in (http://www.dsmtuners.com/forums/tuning-engine-management/307561-new-ecuflash-1-38-2g.html) thread reports that he has managed to successfully flash the 99 ECU. The only problem right now is that we don't have a tuned ROM to write. EDIT: There might be a problem for now (http://www.dsmtuners.com/forums/tun...14-evoscan-ecuflash-tuning.html#post151636110). It also seems that there are problems with (early)98 ECUs, so you need a 98(late)/99 ECU to be able to read it.
That's not so great... But anyway, the information you have found tells us a lot. If the problem is with modified ROMs then there is most likely a checksum somewhere in the ROM.Unfortunately, this is not true. ...
Then its most likely because the ECU is different. I hope you still have the 98(late)/99 one to swap
So, I have just purchased an EVO VIII ECU on ebay for $150. With some very minor rewirings, this ECU should be able to run my '99GSX. Then, I will be able to use EcuFlash with no issues. I plan on having this installed by either next week or the week after, so I will keep everyone updated. If I am successful with this, this may be the most powerful tuning solution on the market for the money. Complete control over a mitsubishi factory ECU for under $200!
So, I have just purchased an EVO VIII ECU on ebay for $150. With some very minor rewirings, this ECU should be able to run my '99GSX. Then, I will be able to use EcuFlash with no issues. I plan on having this installed by either next week or the week after, so I will keep everyone updated. If I am successful with this, this may be the most powerful tuning solution on the market for the money. Complete control over a mitsubishi factory ECU for under $200!
Evo VIII ECU??? Was that a typo or will it really work? I know about the Evo V but VIII? If so this would be a wonderful discovery!
There is one thing to note though, the spec of H8 based processors we have in late 2Gs says you can only flash the ECU ~100 times.
Same might apply to Evo ECUs. Then again, 100 flashes is considerable amount.
So my question is will it work on my 98 gst with my 95 eprom ecu?