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Evo ecu swapped successfully

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Old May 11, 2010 | 10:06 PM
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crf inc.'s Avatar
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Evo ecu swapped successfully

So yeah i swapped my evo8 ecu and flashed a modded lancer rom onto it. the car runs pretty good but im having a few minor issues.

-my car no longer revs up to 6200rpm when sitting at a dead stop. it revs up to about 4500rpm and bogs out. but it does still rev to 6200 when in neutral but moving. also revs fine through the gears. now this kinda sounds to me like 2 step might be engaged. anyone have any input on this matter?

-second, when my car is cold it almost feels like its mis-firing in first gear, but only when the car is cold.. i know i should always let my car warm up first but sometime when ur running late to work you gotta do what you gotta do..lol i think i need to datalog some more low rpm pulls through 1st gear when the car is cold so that i can see what my knock counts is, my wideband is saying that my a/f looks fine even when this is happening.

- and last, when my car is cold it takes at least two cranks to fire up. usually the first crank the car will turn over and die immediately. then the second crank it will fire right up. but this morning, the first crank it just turned over for a while and nothing happend, the second crank it turned over then died right away, and then the third time was a charm.

the ecu has been installed for about a week now and everything else is working great. we datalogged some pulls and got rid of most of my knock issues, so this is all thats left. any help with my issues will be greatly appreciated. thanks!
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Old May 12, 2010 | 12:07 AM
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Ok a little confused on one thing first here. Are you saying that you installed the evo ecu then flashed your same modded rom from your lancer ecu into it? If so you just completely defeated the purpose of the evo ecu.

Or do you mean you modified the tables of the evo rom to run your tune?
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Old May 12, 2010 | 07:53 AM
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no you heard me right.. i saved the evo rom, then flashed a modded version of my stock lancer oz rom onto it. i did this because i dont have my turbo kit on yet. i understand what your saying and as soon as i put my turbo kit on i am gonna flash the evo rom back onto the ecu so that i have a better base map to start tuning from. basically now this is just one less thing i have to install when i put my kit on.
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Old May 12, 2010 | 11:03 AM
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Ok I see now ' was thinking you were already turbo'd
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Old May 12, 2010 | 04:48 PM
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Nope not yet.. But very very soon.

So... Anybody?
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Old May 12, 2010 | 09:56 PM
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really?? nobody has any ideas? thats pretty weak
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Old May 12, 2010 | 10:07 PM
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Originally Posted by crf inc.
really?? nobody has any ideas? thats pretty weak
Well all in all this is being done a bit backwards no?

Personally I would have tuned the evo rom to run on the car you if you already have an evo ecu in it. Tephra v7 would definitely be my first choice. After all you are going to have to anyways when you finally convert may as well get a head start and then adjust the fuel and timing later when the turbo is installed.

Miss fire when cold sounds like the cold start timing retard map to me. Most people tend to just disable this weird map as it causes your described condition. I have no idea if that's defined for your rom though. I'm sure its in the lancer rom just can't tell you where.

Cranking primer first pulse table in the evo rom is where i would tackle your cold start issue. If the car starts reliably and dies shortly afterwords the maf comp vs engine temp table after needs adjusting too.

I'm willing to bet you could reliably fake these sort of settings with the except of running enrichment by pumping up the first couple values in the maf comp/smoothing table. Its an overall multiplier and the first couple values should only fall under the start up condition.
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Old May 12, 2010 | 10:40 PM
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Originally Posted by RoadSpike
Well all in all this is being done a bit backwards no?

Personally I would have tuned the evo rom to run on the car you if you already have an evo ecu in it. Tephra v7 would definitely be my first choice. After all you are going to have to anyways when you finally convert may as well get a head start and then adjust the fuel and timing later when the turbo is installed.

Miss fire when cold sounds like the cold start timing retard map to me. Most people tend to just disable this weird map as it causes your described condition. I have no idea if that's defined for your rom though. I'm sure its in the lancer rom just can't tell you where.

Cranking primer first pulse table in the evo rom is where i would tackle your cold start issue. If the car starts reliably and dies shortly afterwords the maf comp vs engine temp table after needs adjusting too.

I'm willing to bet you could reliably fake these sort of settings with the except of running enrichment by pumping up the first couple values in the maf comp/smoothing table. Its an overall multiplier and the first couple values should only fall under the start up condition.
i'll have to look more into these things. your probably right, i am *** backwards but thats why im on here asking. im still fairly new to flashing an ecu and im pretty pumped that i actually have the evo ecu in and running decent. im not familiar with tephra v7 but i hear from most people that its the best way to go. im gonna have to do some researching on it. im not planning on actually tuning the car myself, im taking the car to yimisport tuning for an all day ecuflash/dyno tune. im just trying to make things as easy on my tuner as i can, and if tephra v7 is gonna allow him to give me a better tune then thats what i want.

also one other thing is that i swapped my stock lancer MAP sensor with a jdm evoX MAP sensor so that we can accurately datalog vac/boost. but since i put the sensor in my car keeps throwing the P1400 code. (Manifold Differential Pressure Sensor Circuit). i know this is because of the different MAP sensor but can figure out what to do about it.
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Old May 12, 2010 | 10:52 PM
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Originally Posted by crf inc.
i'll have to look more into these things. your probably right, i am *** backwards but thats why im on here asking. im still fairly new to flashing an ecu and im pretty pumped that i actually have the evo ecu in and running decent. im not familiar with tephra v7 but i hear from most people that its the best way to go. im gonna have to do some researching on it. im not planning on actually tuning the car myself, im taking the car to yimisport tuning for an all day ecuflash/dyno tune. im just trying to make things as easy on my tuner as i can, and if tephra v7 is gonna allow him to give me a better tune then thats what i want.

also one other thing is that i swapped my stock lancer MAP sensor with a jdm evoX MAP sensor so that we can accurately datalog vac/boost. but since i put the sensor in my car keeps throwing the P1400 code. (Manifold Differential Pressure Sensor Circuit). i know this is because of the different MAP sensor but can figure out what to do about it.
Yeah I know how to get rid of that code with an evo rom but with your rom its finding the map thats the problem. I say go with a tephra v7 94170015 version rom which has the most definitions for all maps developed.

It will be loads easier than finding the map yourself. I'd help you but honestly I'm already taking enough time mapping the auto's to larger ignition and fuel tables.
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Old May 15, 2010 | 03:43 PM
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Originally Posted by RoadSpike
Yeah I know how to get rid of that code with an evo rom but with your rom its finding the map thats the problem. I say go with a tephra v7 94170015 version rom which has the most definitions for all maps developed.

It will be loads easier than finding the map yourself. I'd help you but honestly I'm already taking enough time mapping the auto's to larger ignition and fuel tables.

just to clarify,

I am actually running an evo8 rom but i flashed n/a stock lancer values into that rom just to be able to drive around n/a until i install my turbo..
i dunno if this would make it easier to find the map, but im assuming it would.
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Old May 15, 2010 | 04:12 PM
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Originally Posted by crf inc.
just to clarify,

I am actually running an evo8 rom but i flashed n/a stock lancer values into that rom just to be able to drive around n/a until i install my turbo..
i dunno if this would make it easier to find the map, but im assuming it would.
Which rom id are you using?

If you have the maps already setup in an evo rom it will be even easier for you to use the tephra v7 rom.

The test values you are looking for are the egr map tests. Really there is a thread in the ecuflash forum about how to log boost with a different sensor which should give you a step by step for most rom id's.
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