something that was posted to evolutionm.net to fix the tach issue was to disconnect the white wire from the transistor pack to the ecu. at least one person on evoM confirmed that it works, i was going to try it tonight.
also has anyone figured out a fix to the CAS/CRANK signal CEL yet? i have been looking into reasons as to what might be cauging this problem but i dont have access spare evo parts to confirm suspessions. i would like to get this fixed because i seem to be having problems with running lean. i did a full throlttle run with my car to get some logging in and figure out what what kind of tuning it might need, and now it runs like poop under low load. coughs and stutters...not sure if it is the EDM rom's lean spool or other issues...
Have you tried to dissable the lean spool? And i did get a cel but it was for an idle issue. If cutting that wire resolves the tach problem let us know! I really don't want an aftermarket gauge. And sam goddamit!! =(
I don't know if you guys have tried this, but in Evos the injector scaling table is set less then what the injectors are acually rated. For example, stock evo injectors are rated at 560cc, but stock scaling table has 513cc. I'm running 650cc, but have 597cc in the scaling table.
ok so here is where i am at with my car... i posted this on EvolutionM and thought i might put it up here for some more input.
"both the EVO8 ecu and eclipse ecu are pin 58. i just pulled mine, so far so good but the ecu still needs to go trough its re-learn process so we will see. i cant remember if it did it before with a high/clod idle or not...
anyway i might have made some progress on the crank/cam sensor problem... i found an EVO8 FSM and did some looking. apparently it seems that pin 40 on the EVO8 ecu is a ground for the crank/cam and inlet air sensors... on the eclipse wiring there is nothing there....so from what i can see on the EVO8 wiring, the cam/crank sensors do not ground to the chassis like on the eclipse. also something that might be playing a factor is according to the eclipse there is a chassis ground going to pin 91, on the EVO8 this pin goes to the inter-cooler sprayer (ICS) manual switch. basically the way i see it is when you push the ICS manual it completes a ground path to that pin. so with the chassis ground from the eclipse run to that pin you are basically telling the EVO8 ecu that you are permanently holding the ISC manual switch in. i don't know yet it that does anything to the way the EVO8 tunes but i am going to ask the question.
so basically what i think i am going to do this weakened is this. i already pulled pin 58 and 91. next i am going to pull pins 13 and 26 then disconnect the that chassis ground. then i am going to ( with an adapter ) plug one of those pins to the EVO8 pin 40 and tape the rest of the pins/ ground terminals of. finally i am going to run a separate ground to pins 13 and 26 otherwise i don't think i will get the car running again without the ecu grounded.
ooh and i figured out what my hesitation was.. apparently the ceramic around the electrode on my #2 spark plug broke loose. i didn't shatter but is broke loose in a way that let it fall down and completely cover the electrode.....
well that didn't work as well as i would have hoped. moving pins around wasn't as easy as i thought it would be. so this is what i did i put all the grounds back where they were and ran a separate ground from pin 40 on the ecu to the cam and crank sensors. unfortunately it didn't clear the problem. i also tried changing some of the periphery bits. all i did was figure out how to disable to disable the TPS , so i think i am going to switch over to my EDM map for now. I also pulled the wire from pin 91. i don't think there is a reason to pull it but if it is grounded it makes the ecu thing you are holding the ICS manual button down. haven't gotten confirmation that it changes anything in the tune but you never know.
So i got the studder box to work, sam was right and wrong. You need to cut the wire going to pin 43 not 67 (since there is no 67) and then splice the ecu side of that into the red/black wire on the cruise control switch. Other than that ive still had no progress on my idle cel, but im working on it. And mike96 i haven't followed your post that close but if i can think of anything else that might help ill let you know. PS sam if you read this before the monday night meet send me the rom as soon as your done ;].
yes... sorry about that i have been busy trying yo get a couple other things sorted out on my car. pull pin 58, on the evo ecu it is an output for "ENGINE SPEED DETECTION CONNECTOR" the one you wound hook up a tach to. i pulled mine now it runs rock solid at idle.
no but it has to be an evo 8 ecu due to mivec in 9s. The programming is the same basically between mr, rs and gsr or whatever.. Some ecu include ic sprayer in certain years i believe before 05..
The ecu doesn't matter like stated above, and the original poster should update the first post with the added information that we now know
1)disconnect pin 58 from the ecu as stated by mike96 to fix the tach problem.
2)if you are using stock injectors the scaling/latency posted in the first page might not work.
3)factory 2step can be used (and changed via ecuflash) by cutting the wire coming from pin 43 on the ecu and running/tapping a wire to the black/red on the cruise control switch.
Anyone figure out a way to connect a wideband to the ecu like with dsmlink? Ive found a few threads on evolutionM but i was wondering if anyone has done any experimentation with this so far. Because its kind of annoying using a separate harness to log the afr's.
Oh and has anyone had a CEL for "idle system malfuntion"? I only get this with the evo ecu, but not with my original ecu.
yes. and yes.
yes, i have been plagued with the idle CEL P0505 and one for Generator FR terminal circuit malfunction P0622 i get them at random with both the 9653 and 9927 Rom's.
and
yes, i have been messing with hooking up my wide-band to the stock ecu, however i an running a tech-edge WB with a simulated narrow band so i have it hooked up to the input for the rear 02 and am logging it that way. i haven't tried doing the mod to hook the 0 - 5v directly to the ecu yet though
The ecu doesn't matter like stated above, and the original poster should update the first post with the added information that we now know
Just to be certain, this will also work with a JDM evo 8 GSR ecu? As well as any EDM ECU?
Just want to make sure that the roms will be compatible with all flavors of the ecu, USDM or otherwise.
Just to be certain, this will also work with a JDM evo 8 GSR ecu? As well as any EDM ECU?
Just want to make sure that the roms will be compatible with all flavors of the ecu, USDM or otherwise.
right now i am running a USDM ECU with an EVO8 AUS-SA rom flashed to it. this is what i have found so far.
94170008 - 0015 run with CEL for CAM/Crank sensor
90550001 runs but for some reason i got cel for o2 sensor and car ran like crap
96530006 runs fine
these ran for me as well but i cant remember one of them gave me a CEL for the same as 9417 ROMs and the other gave a CEL for o2 sensor i just cant remember which one did which
96260007 - 0009
99270000
and there is one other rom i tried but i cant remember which one it was of the top of my head but i had no problems with it, the only reason i am running the 9653 rom right now is i have a tephra mod rom installed.
jdm ecus should run but they are not made to run with usdm cars so u will most likely get as he said check engine lights or similar.. U should try to get usdm because they are getting good support for ecuflash on evom and have the majority of the patches.. ntls, valet mode, knock flash, and soon SD.
jdm ecus should run but they are not made to run with usdm cars so u will most likely get as he said check engine lights or similar.. U should try to get usdm because they are getting good support for ecuflash on evom and have the majority of the patches.. ntls, valet mode, knock flash, and soon SD.
But a USDM Rom is going to throw codes due to the crankshaft positioning sensor. I have both an EDM Rom and a JDM Rom working with no CELs. A USDM Rom would be nice for the tephra mods, but I can live with the JDM Rom for now.
Yep stock 2g maf with stock injectors. I have some evo injectors that i would like to use but im still trying to figure out how to do this.
Since the 2g mas flows 20% less air than the evo mas you should be just about right with the stock injectors. With the 560's I"d think you'd have to lean it out 20% more.
DO you guys think its worth it to run a evo ecu instead of the 2g eprom?
the 9653 rom is an EDM rom with the tephra patch done to it. seems to run pretty good but i dont have everything hooked up yet like a clutch switch which the 9653 rom needs for the stationary rev limit and the NLTS.
Just an FYI, I found what appears to be the latency values for the stock 450cc injectors.
I'm throwing this out there in hopes that someone can confirm this is correct for me and any others who aren't upgrading injectors at the same time as the ecu swap.
Just to be certain, this will also work with a JDM evo 8 GSR ecu? As well as any EDM ECU?
Just want to make sure that the roms will be compatible with all flavors of the ecu, USDM or otherwise.
Yes it will, the USDM and EDM ecu's use 4 plugs while the JDM one uses 3. But i think it would be easier to find a USDM evo ecu since i see them pop up on ebay every once in a while.
right now i am running a USDM ECU with an EVO8 AUS-SA rom flashed to it. this is what i have found so far.
94170008 - 0015 run with CEL for CAM/Crank sensor
90550001 runs but for some reason i got cel for o2 sensor and car ran like crap
96530006 runs fine
these ran for me as well but i cant remember one of them gave me a CEL for the same as 9417 ROMs and the other gave a CEL for o2 sensor i just cant remember which one did which
96260007 - 0009
99270000
and there is one other rom i tried but i cant remember which one it was of the top of my head but i had no problems with it, the only reason i am running the 9653 rom right now is i have a tephra mod rom installed.
Hey can you send me a link to where i may be able to find the 96530006 rom? Or if you could send it to me that would be great.
i don't remember exactly where i got a factory ROM from, if it came with ecu flash or i got it from either aktivematrix.com or openecu.org. but you can get the modded ROM from this post TephraMOD V5.10 - evolutionm.net . be sure you get the updated XML for that ROM off of pg 32 second to the last post on the page, even if you don't use the modded ROM it has the correct addresses for some of the base maps.
also as a side note for the installation notes at the beginning of the page..... if installing on a 96 - 97 eclipse be sure to switch injectors 1 and 4 with 2 and 3. my car had a nasty hesitation at cruse and a problem with stuttering under full load around 4000 rpm and up. i haven't had a chance to check the full load but after switching the injectors the hesitation at cruse went away..... i will get back more on that when i get a chance
edit... also i need to add, the 9653 rom will need a clutch switch for the stationary rev limit to work and NLTS if using tephra mod needs it also.....
i don't remember exactly where i got a factory ROM from, if it came with ecu flash or i got it from either aktivematrix.com or openecu.org. but you can get the modded ROM from this post TephraMOD V5.10 - evolutionm.net . be sure you get the updated XML for that ROM off of pg 32 second to the last post on the page, even if you don't use the modded ROM it has the correct addresses for some of the base maps.
also as a side note for the installation notes at the beginning of the page..... if installing on a 96 - 97 eclipse be sure to switch injectors 1 and 4 with 2 and 3. my car had a nasty hesitation at cruse and a problem with stuttering under full load around 4000 rpm and up. i haven't had a chance to check the full load but after switching the injectors the hesitation at cruse went away..... i will get back more on that when i get a chance
edit... also i need to add, the 9653 rom will need a clutch switch for the stationary rev limit to work and NLTS if using tephra mod needs it also.....
Thanks! Im going to try out this rom and see if my cel goes away.
Did they ever come out with ecu flash for the 98/99 ecu?
There is a separate thread for this.
The short answer is no.
The long answer is that supposedly it should work if you can create enough voltage to put the ecu into reflash mode but since this voltage is not created internally there isn't a widely available option that will get you into reflashing mode and even if you did manage to get it that far there has been limited development of full ROMs for 98/99 ecus. Some people are working on it though so we might see something soon.
factory 2step can be used (and changed via ecuflash) by cutting the wire coming from pin 43 on the ecu and running/tapping a wire to the black/red on the cruise control switch.
so basically your using the cruse control switch as a clutch switch?????
also with the 9653 rom i do still get the idle malfunction and generator cel but if i clear it, or wait a day or two it usually goes away..... comes on about every weak or two... but give it a shot seems to very from rom to rom with my car may be you wont get it.
, so i think i am going to switch over to my EDM map for now. I also pulled the wire from pin 91. i don't think there is a reason to pull it but if it is grounded it makes the ecu thing you are holding the ICS manual button down. haven't gotten confirmation that it changes anything in the tune but you never know.
