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Confirmed: Evo ROM Can Be Flashed to Lancer ECU

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Old May 13, 2010 | 09:20 AM
  #271  
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Originally Posted by senate6268
Scaling up to 8500rpm would be overkill. The piston speeds are pretty high from the 4G94's 95.8mm stroke. Even with a built motor and valvetrain I wouldn't see being able to safely rev over 7500rpm (23.95 m/sec), at most, for very long. 7200rpm (22.99 m/sec) is highest I would recommend for a built 4G94 for longevity. Everyone has their own opinion on maximum safe piston speeds. This is simply mine.
I'm just going to use the same table size that tephra laid out really. It is probably overkill but it will be alot easier for me to follow his example then make the scaling on my own
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Old May 13, 2010 | 01:37 PM
  #272  
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So we are going to use our original Lancer ROMs, but they will have tephras huge maps?

What fuel limit are you talking about?
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Old May 13, 2010 | 02:40 PM
  #273  
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Originally Posted by 4g94T
So we are going to use our original Lancer ROMs, but they will have tephras huge maps?

What fuel limit are you talking about?
Yes thats the plan

Basically there is a piece of code in the main fuel loop that determines that a specific load and fuel ipw is impossible. If the load goes over this limit it overrides it with this specified cap for both load and ipw.

So I hunted it down like it was done in the evo 8 rom and put a nop instead of a mov which effectively stops the override.
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Old May 13, 2010 | 07:03 PM
  #274  
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Well back from a dentist appoint so i got home early enough to look at code most of the day

I'm thinking about making the alt map code availiable to you guys but I kinda wanted to gauge interest.

So far I'm thinking about implmenting these:
-Big Maps
-Alt Maps
-Flash Cel on Knock
-1Byte load
- MDP Pressure avergaing
- Airflow calcs

I'm a tad unsure if alt maps is even possible for you guys. The mod requires a switch and a spare input into the ecu.
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Old May 13, 2010 | 07:09 PM
  #275  
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Originally Posted by RoadSpike
Well back from a dentist appoint so i got home early enough to look at code most of the day

I'm thinking about making the alt map code availiable to you guys but I kinda wanted to gauge interest.

So far I'm thinking about implmenting these:
-Big Maps
-Alt Maps
-Flash Cel on Knock
-1Byte load
- MDP Pressure avergaing
- Airflow calcs

I'm a tad unsure if alt maps is even possible for you guys. The mod requires a switch and a spare input into the ecu.
oooo im liking this already
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Old May 13, 2010 | 07:10 PM
  #276  
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Can I request the rev limit table and fuel primer table (for e85 start ups)
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Old May 13, 2010 | 07:46 PM
  #277  
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Originally Posted by 4g94T
Can I request the rev limit table and fuel primer table (for e85 start ups)
Certainly I was planning to find all the maps that are in the tephra rom that of course apply to this car.
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Old May 13, 2010 | 07:52 PM
  #278  
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I would be forever in your debt to have those maps and the cel light knock sensor flash
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Old May 13, 2010 | 08:04 PM
  #279  
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should be called the RoadSpike rom
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Old May 13, 2010 | 09:02 PM
  #280  
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Originally Posted by 4g94T
should be called the RoadSpike rom
That wouldn't be fair to tephra who made the first ones.
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Old May 13, 2010 | 10:27 PM
  #281  
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how bout tephra spike rom lol
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Old May 14, 2010 | 01:55 AM
  #282  
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Originally Posted by link62
how bout tephra spike rom lol


Its going to take me quite a while to get it all ready there is much to learn about patching these various tasks. Oddly the easiest one seems to be just slapping big maps on it.

Atm I'm just defining everything that i can from the tephra evo rom into the new xml. Of course there are some pieces of code that don't exist like the boost control for example which just can't happen on this rom.

I did notice one thing i thought was surprising in my quest for the ultimate xml. There is no fuel cut code in the rom, it does have a max load cap but it has no fuel cut timer like the evo does when the load goes over an expected limit.

The decel tables for the auto seem to be in 3d too so they have like TPS and rpm axis to them which is another strange difference.

Plenty to find still I still have the primer cranking enrichment, ISCV tables, ODBII code patch, and a couple more to get defined.

I'm using this opportunity to basically define every variable in IDA Pro so when i go to implement the patch its not a complete hassle.
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Old May 14, 2010 | 02:12 AM
  #283  
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Originally Posted by RoadSpike


Its going to take me quite a while to get it all ready there is much to learn about patching these various tasks. Oddly the easiest one seems to be just slapping big maps on it.

Atm I'm just defining everything that i can from the tephra evo rom into the new xml. Of course there are some pieces of code that don't exist like the boost control for example which just can't happen on this rom.

I did notice one thing i thought was surprising in my quest for the ultimate xml. There is no fuel cut code in the rom, it does have a max load cap but it has no fuel cut timer like the evo does when the load goes over an expected limit.

The decel tables for the auto seem to be in 3d too so they have like TPS and rpm axis to them which is another strange difference.

Plenty to find still I still have the primer cranking enrichment, ISCV tables, ODBII code patch, and a couple more to get defined.

I'm using this opportunity to basically define every variable in IDA Pro so when i go to implement the patch its not a complete hassle.
Your too much bro Your like the hero of the base lancer posse lol. Much appreciate all your hard work and time put into this for sure
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Old May 14, 2010 | 01:39 PM
  #284  
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Originally Posted by 03lances
Your too much bro Your like the hero of the base lancer posse lol. Much appreciate all your hard work and time put into this for sure
Hmm been researching the alt maps possibility on the lancer auto and it seems pretty bleak. The real problem is on these ecu's I have no idea if ADC0F which is the spare ADC input on the evo can be used here.

Even if it is unused there is really no guarantee it will be wired into the ecu at all. I may have to invent some other way of making it work.
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Old May 14, 2010 | 03:38 PM
  #285  
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hey guys i have a 03 ozrally is it possible to send the ecu rom and flash it? or i have to do it manually
and which openport should i get the 1.3 2.0 or the new tactrix?
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