ECU FLASH Tuning Questions
Originally Posted by anjapower
why can't I download any roms from openecu.org? I see the 3 ROM threads in "Evo 8" forum but there's no link to download from?

Hopefully when we get a forum here, I'll ask everyone to contribute their roms and I can put them all in a directory on my server that anyone can access..
I did just that right now. Plugged in the cable and used the latest ECUFlash to download my stock 05 Evo ROM.
Should we get a new thread for just ROMs?
Anyway, I was looking through all of the tables and everything looks great. The stock Evo runs so rich from the factory, it's ridiculous.
Anyway, I have a quick question for someone who knows these maps a little better. Which one is the one to alter to eliminate fuel cut? Fuel cut in Mitsus is usually proportional to some load value, somewhat proportional to a mass airflow/rev.
I think one of the definitions may be it, but I thought I would ask to make sure.
Thanks,
Eric
Should we get a new thread for just ROMs?
Anyway, I was looking through all of the tables and everything looks great. The stock Evo runs so rich from the factory, it's ridiculous.
Anyway, I have a quick question for someone who knows these maps a little better. Which one is the one to alter to eliminate fuel cut? Fuel cut in Mitsus is usually proportional to some load value, somewhat proportional to a mass airflow/rev.
I think one of the definitions may be it, but I thought I would ask to make sure.
Thanks,
Eric
Originally Posted by MalibuJack
You have to be logged in..
Hopefully when we get a forum here, I'll ask everyone to contribute their roms and I can put them all in a directory on my server that anyone can access..
Hopefully when we get a forum here, I'll ask everyone to contribute their roms and I can put them all in a directory on my server that anyone can access..
Originally Posted by l2r99gst
I did just that right now. Plugged in the cable and used the latest ECUFlash to download my stock 05 Evo ROM.
Should we get a new thread for just ROMs?
Anyway, I was looking through all of the tables and everything looks great. The stock Evo runs so rich from the factory, it's ridiculous.
Anyway, I have a quick question for someone who knows these maps a little better. Which one is the one to alter to eliminate fuel cut? Fuel cut in Mitsus is usually proportional to some load value, somewhat proportional to a mass airflow/rev.
I think one of the definitions may be it, but I thought I would ask to make sure.
Thanks,
Eric
Should we get a new thread for just ROMs?
Anyway, I was looking through all of the tables and everything looks great. The stock Evo runs so rich from the factory, it's ridiculous.
Anyway, I have a quick question for someone who knows these maps a little better. Which one is the one to alter to eliminate fuel cut? Fuel cut in Mitsus is usually proportional to some load value, somewhat proportional to a mass airflow/rev.
I think one of the definitions may be it, but I thought I would ask to make sure.
Thanks,
Eric
Congrats, that was also the first thing I did..
I suggest to create a thread just for roms, but they have to be OEM or self-tuned, and the mods have to allow zip uploads of 150k (approx) which I don't know is configured in this forum.
I didnt clearly see a table that directly associated with fuel cut.. It could be one of the load maps (single columns) but I haven't figured it out yet.. Or its just not defined yet in the files and it'll be added later.
Yep, 96940011 is the one I just downloaded. The upload limit in this forum is only 100K anyway, so we need it upped a little to upload our ROMs.
Eric
Eric
Last edited by l2r99gst; May 10, 2006 at 07:50 PM.
Originally Posted by MalibuJack
To answer your questions in order..
Congrats, that was also the first thing I did..
I suggest to create a thread just for roms, but they have to be OEM or self-tuned, and the mods have to allow zip uploads of 150k (approx) which I don't know is configured in this forum.
I didnt clearly see a table that directly associated with fuel cut.. It could be one of the load maps (single columns) but I haven't figured it out yet.. Or its just not defined yet in the files and it'll be added later.
Congrats, that was also the first thing I did..
I suggest to create a thread just for roms, but they have to be OEM or self-tuned, and the mods have to allow zip uploads of 150k (approx) which I don't know is configured in this forum.
I didnt clearly see a table that directly associated with fuel cut.. It could be one of the load maps (single columns) but I haven't figured it out yet.. Or its just not defined yet in the files and it'll be added later.
Originally Posted by b0ostedEV08
The cut is referred as Boost Limit Table and Boost Cut Delay Timer data value.
Thanks,
Eric
Originally Posted by l2r99gst
I did just that right now. Plugged in the cable and used the latest ECUFlash to download my stock 05 Evo ROM.
Should we get a new thread for just ROMs?
Anyway, I was looking through all of the tables and everything looks great. The stock Evo runs so rich from the factory, it's ridiculous.
Anyway, I have a quick question for someone who knows these maps a little better. Which one is the one to alter to eliminate fuel cut? Fuel cut in Mitsus is usually proportional to some load value, somewhat proportional to a mass airflow/rev.
I think one of the definitions may be it, but I thought I would ask to make sure.
Thanks,
Eric
Should we get a new thread for just ROMs?
Anyway, I was looking through all of the tables and everything looks great. The stock Evo runs so rich from the factory, it's ridiculous.
Anyway, I have a quick question for someone who knows these maps a little better. Which one is the one to alter to eliminate fuel cut? Fuel cut in Mitsus is usually proportional to some load value, somewhat proportional to a mass airflow/rev.
I think one of the definitions may be it, but I thought I would ask to make sure.
Thanks,
Eric
"boost limit" which is the threshold which you can go up to before it cuts
and
"boost delay timer" which is the amount of time the boost is allowed to go over the "boost limit" value before the fuel cuts
You can either just jack them both up all the way and basically elimainate fuel cut 100% or you can just raise it enough to stop the car from cutting as you have it tuned which retains some over boosting protection
Originally Posted by l2r99gst
That's the table I was thinking, but I didn't want to mention it before I knew for sure. The table has values like 245 and 235. What are those referencing...load values?
Thanks,
Eric
Thanks,
Eric
Okay.. I see both of them.. The rom I'm using shows the boost cut delay timer as being invalid for ECU MN132874 JM9417
Also the definition file should also have the immobilizer section added since having it written down somewhere will also help if you accidentally flash your ECU with someone elses.
Also the definition file should also have the immobilizer section added since having it written down somewhere will also help if you accidentally flash your ECU with someone elses.
Originally Posted by MalibuJack
Okay.. I see both of them.. The rom I'm using shows the boost cut delay timer as being invalid for ECU MN132874 JM9417
Also the definition file should also have the immobilizer section added since having it written down somewhere will also help if you accidentally flash your ECU with someone elses.
Also the definition file should also have the immobilizer section added since having it written down somewhere will also help if you accidentally flash your ECU with someone elses.
I will fix that problem with JM9417 ROM. Also me and Colby talked today about adding the immobilizer section... hehe



