Evo 8 ECU In 2g Works!!

[Hubbard 0]

Regarding my trims again. I am flashing for the 850s I put in and decided to go through every map to make sure everything is good. In the periphary, it looks like I had the Full Time Open Loop enabled. I turned that off so I can scale the injectors and hopefully get my trims taken care of before I go back to full open loop.

 

[hediki12]

Regarding my trims again. I am flashing for the 850s I put in and decided to go through every map to make sure everything is good. In the periphary, it looks like I had the Full Time Open Loop enabled. I turned that off so I can scale the injectors and hopefully get my trims taken care of before I go back to full open loop.

kool what brand are the injectors? evom had a thread on injector latencies to make life a little bit easier... and you can also try this . it has a bunch of latencies.. you mite just need to redo the scaling

 

[Hubbard 0]

I used those threads to initially setup the ROM.

My car/ecu is weird. I flashed for the FIC 850s I have and the appropriate latencies. The car would start, but just barely and then die after 5 or so seconds. I then went back to the ROM which was setup for my other injectors which were something like 550s.

The car runs substantially better with the injector size set to the original 513. I was able to do full pulls, have proper AFRs and everything. I once again could not get any fuel trims. I double checked what I have with Mitsulogger in that other thread and everything looks proper. I even tried Evoscan and did the update in that XML and my trims were locked at .108 which means it's not working either.

At this point, I can tune the car fully without fuel cut and everything else. I just have no clue what my trims or duty cycle is. I'm inclined to leave it the way it is or find myself a 98-99 ECU and a 2.0 cable and use that ecu which will have none of the quirks. That is unless someone has some genius idea.

 

[knochgoon24]

I used those threads to initially setup the ROM.

My car/ecu is weird. I flashed for the FIC 850s I have and the appropriate latencies. The car would start, but just barely and then die after 5 or so seconds. I then went back to the ROM which was setup for my other injectors which were something like 550s.

The car runs substantially better with the injector size set to the original 513. I was able to do full pulls, have proper AFRs and everything. I once again could not get any fuel trims. I double checked what I have with Mitsulogger in that other thread and everything looks proper. I even tried Evoscan and did the update in that XML and my trims were locked at .108 which means it's not working either.

At this point, I can tune the car fully without fuel cut and everything else. I just have no clue what my trims or duty cycle is. I'm inclined to leave it the way it is or find myself a 98-99 ECU and a 2.0 cable and use that ecu which will have none of the quirks. That is unless someone has some genius idea.

Go through and scale your MAF. I had to have my 680's scaled like 780's because my MAF scaling was off. Once you do this, you'll probably notice that you'll cross 100 load at 0psi. I bet you don't right now.

 

[Hubbard 0]

I'll put that at the top of my list.

However, how can I scale it if I can't get any fuel trims to show up? If I get a fresh .xml for mitsulogger and evoscan, should it show up?

I think I made the huge mistake of going through and modding this and that when I wasn't even tuning or running the Evo ECU so I lost track of what I've done and what everything does.

 

[mike96]

Regarding my trims again. I am flashing for the 850s I put in and decided to go through every map to make sure everything is good. In the periphary, it looks like I had the Full Time Open Loop enabled. I turned that off so I can scale the injectors and hopefully get my trims taken care of before I go back to full open loop.

i have had that problem in the past..... every now and then my car would do that after a flash and would take about a week of driving before the trims would start showing.

 

[knochgoon24]

I'll put that at the top of my list.

However, how can I scale it if I can't get any fuel trims to show up? If I get a fresh .xml for mitsulogger and evoscan, should it show up?

I think I made the huge mistake of going through and modding this and that when I wasn't even tuning or running the Evo ECU so I lost track of what I've done and what everything does.

I can send you a semi-clean tephra 9653 rom (and the xmls to go with it). You'll just have to adjust the injector scaling, then go and adjust the MAF scaling. I have all the tephra mods but the "flash cel on knock" turned off. I also have lean spool disable by setting the start and stop RPM to 2500. It seems to work.

If your 850's weren't working unless you scaled them like 550's, start by adding a pretty decent chunk out of your 19-75 cells. I idle at about 45 Hz. You may need to add 30% or more if you're really running that lean.

You won't tune with the fuel trims. You'll set the car to run full open loop, then look at your WB readings and adjust up and down from there until you get your idle set. You'll be comparing your actual AFR to your AFR Map. Once idle is set, you'll slowly work your way up comparing the two AFR values. If you're richer, lower the numbers. If you're lean, add a few.

It's nice if you have "CEL on knock" turned on. If you start going lean, you'll start knocking before any major damage is done.

I was able to just sit in an empty parking lot one night and get my values up to about 1200Hz just from brake boosting (auto) but you won't have that pleasure. You might be able to get some of the lower numbers (up to about 400Hz) just from revving.

You're goal will be to set up your MAF scaling so you can get as close your your AFR map numbers as you can. Once you do that, turn closed loop back on and take it for a drive.

I just did 600 miles worth of driving this weekend. My low LTFT is -1.5% and my mid LTFT is 2.4%, so I have a little adjusting to do in the mid flow areas. I'd rather have the mid LTFT be just a bit negative than positive.

 

[Ceddy]

i have had that problem in the past..... every now and then my car would do that after a flash and would take about a week of driving before the trims would start showing.

You should reset your ecu after flashing a different rom. Not all of the RAM is erased during flashing.

You could get a weird number like -2,000,000 stuck in the Fuel Trim RAM or other RAM location and it will screw things up.


Also make sure you Front O2 Sensor is cycling, a bad O2 will kill Fuel Trims.
Make sure the Front O2 or Closed Loop isn't disable in the Periphery Bits.
And check if your Open Loop Load and Open Loop Throttle table haven't been messed with.

Its usually best to restart with a fresh ROM when things get screw up, saves you time in the long run.

 

[knochgoon24]

Its usually best to restart with a fresh ROM when things get screw up, saves you time in the long run.

Agreed.

 

[mike96]

You should reset your ecu after flashing a different rom. Not all of the RAM is erased during flashing.

You could get a weird number like -2,000,000 stuck in the Fuel Trim RAM or other RAM location and it will screw things up.


Also make sure you Front O2 Sensor is cycling, a bad O2 will kill Fuel Trims.
Make sure the Front O2 or Closed Loop isn't disable in the Periphery Bits.
And check if your Open Loop Load and Open Loop Throttle table haven't been messed with.

Its usually best to restart with a fresh ROM when things get screw up, saves you time in the long run.

see the thing is, is that evoscan would drop the trims out of the blue every now and then after a flash. car would run fine, and ecuflash would show all the tables fine. after about a week of driving the trims would go back to working...

 

[Hubbard 0]

Thanks for the help everyone. I can't tell you how much I appreciate it.

I'll start to work on that MAF scaling after class tomorrow. I'll have to drive the car about 30-40 miles the way it is, but considering the driving I did on it today that shouldn't be a problem. I just hope this fixes it and I can start cranking the boost.

Oh. When I start doing this scaling, do I set my injector size at 850 then or leave it at the 513 that currently works?

 

[knochgoon24]

Thanks for the help everyone. I can't tell you how much I appreciate it.

I'll start to work on that MAF scaling after class tomorrow. I'll have to drive the car about 30-40 miles the way it is, but considering the driving I did on it today that shouldn't be a problem. I just hope this fixes it and I can start cranking the boost.

Oh. When I start doing this scaling, do I set my injector size at 850 then or leave it at the 513 that currently works?

You'll want to set it to the values listed on evolutionm.net for the 850s and then scale your MAF. It's also best to do a BLT right before hand, just to make sure you aren't leaking.

It's not hard to get the MAF dialed in, just time consuming.

 

[Ceddy]

Is anyone here running Speed Density?

I'm trying to port it over to the 98/99 ecus. My MAP VE table is significantly different then the stock Evo MAP VE table. Trying to find out if the differences are specific to my car or to all DSMs vs Evos.

If someone could post or send me their VE tables, and if they are using the 2G or Evo MAF Scaling, Size, etc. It would be of great help.


Thanks.

 

[knochgoon24]

Is anyone here running Speed Density?

I'm trying to port it over to the 98/99 ecus. My MAP VE table is significantly different then the stock Evo MAP VE table. Trying to find out if the differences are specific to my car or to all DSMs vs Evos.

If someone could post or send me their VE tables, and if they are using the 2G or Evo MAF Scaling, Size, etc. It would be of great help.


Thanks.

I'm not running speed density, but my MAF scaling for the 2g MAF was way off both of the maps that have been posted.

I might mess with SD in the spring.

 

[the_mork]

Is anyone here running Speed Density?

I'm trying to port it over to the 98/99 ecus. My MAP VE table is significantly different then the stock Evo MAP VE table. Trying to find out if the differences are specific to my car or to all DSMs vs Evos.

If someone could post or send me their VE tables, and if they are using the 2G or Evo MAF Scaling, Size, etc. It would be of great help.


Thanks.

I would send you mine but I broke the car so it is all the way in Wausau and I lost the laptop that would have the tables on it.

From what I remember my map VE table wasn't terribly different than the evos but I think their load to map was higher.

 

[Hubbard 0]

I can send you a semi-clean tephra 9653 rom (and the xmls to go with it). You'll just have to adjust the injector scaling, then go and adjust the MAF scaling. I have all the tephra mods but the "flash cel on knock" turned off. I also have lean spool disable by setting the start and stop RPM to 2500. It seems to work.

If your 850's weren't working unless you scaled them like 550's, start by adding a pretty decent chunk out of your 19-75 cells. I idle at about 45 Hz. You may need to add 30% or more if you're really running that lean.

You won't tune with the fuel trims. You'll set the car to run full open loop, then look at your WB readings and adjust up and down from there until you get your idle set. You'll be comparing your actual AFR to your AFR Map. Once idle is set, you'll slowly work your way up comparing the two AFR values. If you're richer, lower the numbers. If you're lean, add a few.

It's nice if you have "CEL on knock" turned on. If you start going lean, you'll start knocking before any major damage is done.

I was able to just sit in an empty parking lot one night and get my values up to about 1200Hz just from brake boosting (auto) but you won't have that pleasure. You might be able to get some of the lower numbers (up to about 400Hz) just from revving.

You're goal will be to set up your MAF scaling so you can get as close your your AFR map numbers as you can. Once you do that, turn closed loop back on and take it for a drive.

I just did 600 miles worth of driving this weekend. My low LTFT is -1.5% and my mid LTFT is 2.4%, so I have a little adjusting to do in the mid flow areas. I'd rather have the mid LTFT be just a bit negative than positive.

I'm outside doing this now. I'm idling around 35-50Hz. I've got the values in the MAF Scaling table maxed out at 255 and the car is idling at an A/F that is beyond what the gauge reads, so 18.4:1+.

I have my MAF Size set to 260 as it says in the original post and I'm positive I have it set to full-time open loop.

It was mentioned earlier about ensuring the front O2 sensor is operating properly. Looking at mitsulogger, the O2 Sensor value is locked at .078 volts.

Not sure where else to go from here. I guess if someone wants to send me a clean 9653 ROM where all I have to change is the injector sizing, I'd really appreciate it. I can also put up a log if needed.

e-mail is rhubbard4140 at gmail dot com.

 

[knochgoon24]

It's odd that you're having that problem. Your front o2 sensor could be dead and it wouldn't cause a problem with scaling the MAF in open loop.


.078 volts sounds about right if you're running that lean at idle.
What injectors are you running? I'll even throw that scaling in before I send it to you.

 

[Hubbard 0]

It's odd that you're having that problem. Your front o2 sensor could be dead and it wouldn't cause a problem with scaling the MAF in open loop.


.078 volts sounds about right if you're running that lean at idle.
What injectors are you running? I'll even throw that scaling in before I send it to you.

The front O2 worked fine once I got off the map that had scaling for bigger injectors. Though it reading that number makes more sense if it was lean too. From the sounds of it, I think it's fine then.

I'm running FIC 850 injectors. I don't know if my intake is similar to yours, but I have the injen intake, unhacked MAS, and an HKS style filter. Maybe I can use some of your MAF Scaling.

 

[knochgoon24]

You can try them if you want to. Want to try something out for me?

I *think* I have a different way to get a base MAF Scaling. Not sure if it's right though.

 

[knochgoon24]

Here's 4 file. One is a ROM with a MAF scaling that is close to what I have, but it may go lean up top, so be careful.

The other 3 are xml files. Put these in you folder with the rest of them. As far as I know, they are about as up to date as I can get.

^My Scaling^ ----------- ^^ What's on the rom I gave you.

I have an eBay hard intake and the 3" filter that came with it.

If your having the same fueling issues I did, that scaling should get you close. Just keep an eye on your AFR, especially up top.

That rom only has the knock on CEL turned on. Every other tephra mod is off and so is lean spool.

I've been kicking 1 or 2 CELs with this. One if for idle control, the other is for a rear o2 saying the cat isn't working.

Boost cut is set to 280 load.

EDIT: I forgot to add the injector Scaling and latency. It's setup for my PTE 680s right now. You'll have to change those.

 

[Hubbard 0]

Thanks a lot. Will those XML files overwrite anything else that I should back up first?

 

[knochgoon24]

You may want to copy the xml files that you have to somewhere else. Those files work fine for me with that xml, so they should work fine for you.

 

[Hubbard 0]

First, thanks for helping me out. Your XML files were way better then mine. I don't know how on earth people keep up on all these little changes.

Second, I flashed the ROM over to yours and did my appropriate injector changes. The car would barely start, and I had to give it throttle. It ultimately still died after a second.

I went and reduced the injector size down to something like 600 and it started just fine, but was lean. I then started tweaking the MAF Scaling to get the AFR to match the fuel map. If I kept with the ~600 size injector setting, I could lock down my idle AFRs but then I started moving the injector size up to get close to my 850s and would then have to adjust the MAF Scaling again to get the AFR to match the map. However, when I was around 730cc injector size, I had the MAF Scaling values maxed out at 255 and couldn't get them where they were supposed to be.

So basically, I'm having the exact same problem as before. Your maps seemed to get me a little closer, but still nothing.

I'm going to start looking for a flashable DSM ECU and sell my cable, ecu, and harness now because I'm tired of dealing with this crap. I just want to tune for bigger injectors and this whole process has done nothing but hold me back from enjoying my car. It won't be long until Ceddy has done all the mods that I would use anyway.

 

[knochgoon24]

I can't remember, but have you tried the 90550001 rom?

 

[Hubbard 0]

I don't think so...