I was one of the original folks who tried to get 9626 working, and it was a no-start for me (as in, would crank, but not fire; much like an immobilizer issue). I basically ran out of time back then to try and work through the issue any farther than that, but didn't run into the same issue with 9653.

I'd love to know more specifics about what didn't work properly for the 9055 users; I understand the hardware issue the dual-solenoid guys have (which is why I'd like to revisit trying to get 9626 to fire on my own car at some point), but I'm having a hard time seeing what wouldn't work for 9055 users.

 

are u hinting at 9653 replacing 9055 and working on evos 1-8? i think it is an excellent idea and would prove easy for the pros on here.

i am wishing 8857 replaces 8895

 

if i can find another 7 ecu ill do some tests

 

evo 1-8 would not be a possibility. The evo1-3 has an ecu that is very similar to the 2ga Eclipses in that it is socketable but is completely without a flash provision. I have no idea what an evo4 ecu is like but the evo5 ecu is very similar to a 2gb Eclipse ecu, it is flashable but IIRC requires the 2.0 cable because of the voltage requirements of the flash pin and is internally very different from the 6-8 ecus but shares a code base with the 2gb Eclipses.

Edit: Of course if I sit down to think about this for a moment I realize that you could mean that this could be universal to all evos with an ecu swap which any evo 1-8 should be able to accept with a 9653 rom.

 

...

 

My stock ROM is 88580014. I flashed Tephra's 88580714 with all my settings in it. That day the car started running so rich it was bucking/sputtering while building boost. Stock ROM was flashed back and the problem still persists.

I tested for boost leaks and there are none. Installed new spark plugs, changed coils and swapped another set of injectors and it's still there. At this point I'm at a loss. I don't know if the ECU is reading the maps from somewhere else because I tried leaning the fuel map and it's still super rich. I must be missing something here. Any help would be greatly appreciated

 

I tried to load an evo 8 rom into my evo 7 ecu before and ecuflash could not load the rom into the ecu it would flash half way then stop and give an error message
cannot remember what the message was but I had a hell of a time trying to get the 9055 rom to load after had to remove the power to the ecu leave it for a few minutes it eventually took the 9055 never tried it again
besides most of the evo 8 ecu's are 3 plug and the evo 7 are 4 plug for JDM Evo's dunno if the ecu hardware is laid out the same

 

That is very interesting because I can use either 9055 or 9653 on my evo8 ecu in my 2g Eclipse. Actually I can use any evo8 rom but only 9055 and 9653 work with no CELs.

 

Do you have a stock ROM to test against? If so, try flashing that one on to see what happens. Also, are you getting any SES codes? There are two things I can think of off hand that cause a constant rich mixture which are a bad O2 sensor or a bad set of values on the 'Airflow/Hz Baro and Air Temp Compensation' table. I've never seen a ROM that was unable to revert back to its original settings upon a flash of a previous version. That's a strange one.

 

yes we are refering to ones with the ecu conversion like my evo 2

 

how much would I expect to pay a local shop to tune this out for me with the two settings for DD and Race with a switch

 

The beauty of technology is that you don't need to go to a local tuner unless you need it dyno-tuned. Try this thread on for size but I would really suggest just taking the time to learn what is going on. You will enjoy your car more and you wont have to keep paying every time you change something on the car.

https://www.evolutionm.net/forums/ec...ne-choose.html

 

it seems preaty complicated is there some pre made downloadable tunes for various setups to start with. im glanceing over the first two poasts and seems like im over my head

 

There are a ton of competent tuners in this forum that can help you out, I'm sure. I'm guessing they would charge you much less than some random shop around you, all the while having much more knowledge and experience with this.

There are a few of them in here that own/work at shops that can help you out as well. I don't want to say any names to play favorites, but look around the threads in ECUFlash and you can start to see. Or make a post asking for help and I'm sure you will get several PMs. If they frequent this ECUFlash subforum, you will be in good hands.


Eric

 

This sounds like you might have had a power problem (low battery, for example). I don't suspect this was due to the ROM you picked; more of a physical condition, from your description. (The fact that you had trouble flashing 9055 afterwards, and that the flash failed part-way through, suggests to me that you never actually got a successful flash at all.) USDM VIII ECUs are 4-plug; there's very little difference, other than the actual plug, between the USDM and JDM ECUs.