EVOSCAN Logs

[Patryn]

What is the trick to uploading EVOScan logs? Would like some input on my first logs I've done.

[bboyalan]

Which cable are you using with v2.7? Mine has never crashed with OP2.0 on latest firmware. Your trims are somewhat high, particularly low and mid. The rear bank has always been skewed for me, so I neglect it and reference only the front until that gets sorted out [unless I/we are uninformed lol]. What is your IDC calculation? It should read: [InjPulseWidth]*31.25*x/1200

Also, you will not see anything greater than 1600hz due to 1-byte logging/request, BUT there has been an advanced effort made by GC+Greg for changing over to 2-byte if you search in the tuning section of our "other forum" hehe.

Any details/specifics on your car btw? You can always host the file[s] elsewhere, or e-mail them to someone to do so *ahem* :D

[bboyalan]

Am I tripping, or did my reply just now jump to post#2 with a timestamp that is eight hours back... wtf?! haha!

//edit// This one is jumping to post#3.... it is 10:09P PST.

[bboyalan]

You can either upload the individual .csv file[s] or screen capture whichever segments of the log need attention.

[Patryn]

Can't get the csv file to upload. I'm not sure that it is a valid file extension for posting. Keeps giving me an error when uploading.

[R/T93]

Mine load up with Excel, maybe you dont have MS Excel?

[Patryn]

I've got excel and can read it on my computer fine, just doesn't let me post it on here. I'll post some numbers later after I get the laptop charged, got some oddities to get figured out.

[Patryn]

Using EVOScan version 2.7 and have the MUT III selected. The logging option with 3000GT in it just causes EVOScan to crash. The fuel trim low stays at 12.65, fuel trim mid at 11.67, and fuel trim high at 0.68 for the entire graph about 6 minutes of run time. The O2 feedback trimb begins at 12.65 and gradually decreases to close to 0. It begins to go into +/- 6 for the most part. I see the occasional spike up to +/- 10, but its random. At idle (approx. 800rpm) it seems the O2 feedback always reverts to 12.65. I see up to 1600 on the airflow not sure if that is too high. Anything to look for as far as the airflow box goes?

I also edited EVOScan to read the rear as well. The numbers here are vastly different. Fuel trim low starts at -25 and is highly erratic going between -25 and 25. Fuel Trim Mid starts at .10 and generally stays there exept for brief moments going to 11, but always positive. Fuel trim high stays constantly at 12.65. I'm thinking I might have edited EVOScan wrong for the rear trims and O2 feedback. The rear O2 feeback trim stays near 12.65 except for a brief time when it goes to 0.29.

Both O2 sensors are brand new, one being a Denso and the other being an STD "Standard Performance" I think is the name. I guess the good thing about the graph is that virtually no knock 2 counts was the highest. Though getting 99% IDC in some areas. Not sure if the scale goes over 100% for that, but did not hit fuel cut.

[kywhitelightning]

The Low, Mid, and High you are speaking of refer to LTFT's which will not change very frequently unless drastic changes from the STFT(02 Feedback) are pretty constant and not 0. Judging from those numbers you have an intake leak.

1593Hz is all the farther I can get mine to log as well(done on 9b's). I messaged Harnish about this a while back and his response was that this is all the more the logger will see. It doesn't mean that, that is all the more air that the engine is flowing.

The rear trims edit is crap as far as I'm concerned because mine did the exact same thing and I just have them ignored now.

Jeff

[Patryn]

Intake leak meaning between the filters and turbo inlets or the IC piping? Also, not sure if it matters but using big TD05 16G's at wastegate pressure until I get this thing running absolutely smooth before trying to flash the ECU to larger injectors.

[Greg E]

1593Hz is all the farther I can get mine to log as well(done on 9b's). I messaged Harnish about this a while back and his response was that this is all the more the logger will see. It doesn't mean that, that is all the more air that the engine is flowing.

This will get you around that.

http://www.3si.org/forum/f42/how-logging-more-than-160-load-1600hz-evoscan-506589/

[Patryn]

I don't have anything to do a pressure test right now since I'm about to make an ETS move from the Army so working with limited tools. Anyways, checked all the IC lines and they are tight and sealed. T-bolt clamps on all of them. Can't see any visible leaks on the intake side though the PCV line could be leaking a little, though I'm not sure if it would pull vacuum. Hose is just old, stiff, and just needs to be replaced. Anyways would be a very minor vacuum leak if it is one. One thing I thought of that would probably play a little havoc with the O2 trims is the HKS SSQBOV, venting to the atmosphere. That may be it. I can either use a stock BOV or get the recirculate fitting for the HKS if you think that will help.

Mods that might play into anything are FMIC, TD05 16GS, SS Pre-Turbo intake pipes, all emissions crap removed, MAP sensor disconnected, FPR set on the high side of stock specs from the manual, Walbro Fuel Pump, and wastegates hooked up to bypass the boost controller and just run wastegate boost. Few other things, but not sure if they would affect the stock tune. Just trying to make sure everything is absolutely perfect or near as perfect as I can get it before I start messing with ECU Flash and larger injectors.

Thanks for the link Greg should help me in one area. Will have to start flashing when I get to Florida and have my backup vehicle handy in case I screw something up with flashing the ECU.

[kywhitelightning]

I don't have anything to do a pressure test right now since I'm about to make an ETS move from the Army so working with limited tools. Anyways, checked all the IC lines and they are tight and sealed. T-bolt clamps on all of them. Can't see any visible leaks on the intake side though the PCV line could be leaking a little, though I'm not sure if it would pull vacuum. Hose is just old, stiff, and just needs to be replaced. Anyways would be a very minor vacuum leak if it is one. One thing I thought of that would probably play a little havoc with the O2 trims is the HKS SSQBOV, venting to the atmosphere. That may be it. I can either use a stock BOV or get the recirculate fitting for the HKS if you think that will help.

Mods that might play into anything are FMIC, TD05 16GS, SS Pre-Turbo intake pipes, all emissions crap removed, MAP sensor disconnected, FPR set on the high side of stock specs from the manual, Walbro Fuel Pump, and wastegates hooked up to bypass the boost controller and just run wastegate boost. Few other things, but not sure if they would affect the stock tune. Just trying to make sure everything is absolutely perfect or near as perfect as I can get it before I start messing with ECU Flash and larger injectors.

This alone coupled with elevated Low trims screams vacuum leak(elevated base fuel pressure should lower fuel trims pretty much across the board). The typical cuprits are TB gasket and BISS. I found 3 on my car TB gasket, BISS O-ring was so hardened that it shattered when I tried to remove it from the screw, and my MAP sensor O-ring was damaged(the worst leak of the 3).

Unless the BOV is venting while idling I doubt it's the problem. Venting to the atmosphere while in boost on a closed system car like ours will cause a temporary rich condition causing the ECU trims to want to pull fuel not add fuel. Your trims are showing fuel being added.

Are you running blow through? If you are, that could cause flakey Low trims due to where the fresh air is pulled for PCV.

How many years were you in the service? I did 4 in the Army.

Jeff

[Patryn]

TB has 100K on it and I bet it was never replaced or serviced. Glad you mentioned it, I have some viton o-rings around to replace it with. Will check the other areas as well and see if I can see a shift in the trims. May be a week or so.

I did 9 years, but stop lossed this last year. Should be out in a month.

edit: Probably and important point, but I went back and looked at the log. The 12.65 O2 Feedback trim was when the car was idling and coolant temp was less than 140. As coolant temp got around 170 to 180 the trims were easily in the +/- range on the feedback trim. Sorry, I'm just learning how to use this and read the charts. So I'll be a little slow at first.

[kywhitelightning]

The only logging data that you should concern yourself with is when the car is in closed loop and around normal operating temp. O2 feedback trims are instantaneous, while the LTFT's are from a longer period of time. They add together. For example, if you are idling and the Low LTFT reads +5 and the O2 feedback(STFT's) reads -2 the total fuel correction is +3 at that moment. However, if your Low LTFT reads +12 and the O2 feedback reads +2 then there is +14 correction happening. Optimum trims would be LTFT 0 and O2 feedback cycling +/- for the catylist. That would mean there really isn't any correction to be made and the O2 feedback is switching the AFR rich to lean for the cat.

Good ole stop loss. Were you required to go overseas from the stop loss?

Jeff

[Patryn]

Yes, third trip to Iraq. I was acutally about to be stop lossed in 2005, but when they offered to send me to 18 months of Arabic training and a tax free bonus on my second deployment so I reenlisted. Else I would have came back to my parent unit which was about to deploy, then out the door again. I think it was before they had dwell time and stabilization. Anyways, done very soon and time to use up my 95 days of vacation.

[Jimvr4]

This will get you around that.

http://www.3si.org/forum/f42/how-logging-more-than-160-load-1600hz-evoscan-506589/

Greg, Do you need a 98 or 99 ECU to implement going above 1600 Hz?

[Greg E]

Greg, Do you need a 98 or 99 ECU to implement going above 1600 Hz?

Yes.

....this will also work for the montero ecu swaps.

[blackrob]

Does anyone know if there is a post with the acceptable values for logs of the 2G 3S's? I just started logging my car and I have some questions, but I don't want to burden everyone by posting them up here every time I have a question.

[kywhitelightning]

Does anyone know if there is a post with the acceptable values for logs of the 2G 3S's? I just started logging my car and I have some questions, but I don't want to burden everyone by posting them up here every time I have a question.

Creating a thread based on your particular questions regarding your logs is the way to go. If cluttering up the board is a concern of yours, there are quite a few very active people on here that can either answer your questions or direct you to someone that can answer them via PM.

Jeff

[Jesters Deadd]

Using EVOScan version 2.7 and have the MUT III selected. The logging option with 3000GT in it just causes EVOScan to crash. The fuel trim low stays at 12.65, fuel trim mid at 11.67, and fuel trim high at 0.68 for the entire graph about 6 minutes of run time. The O2 feedback trimb begins at 12.65 and gradually decreases to close to 0. It begins to go into +/- 6 for the most part. I see the occasional spike up to +/- 10, but its random. At idle (approx. 800rpm) it seems the O2 feedback always reverts to 12.65. I see up to 1600 on the airflow not sure if that is too high. Anything to look for as far as the airflow box goes?

I also edited EVOScan to read the rear as well. The numbers here are vastly different. Fuel trim low starts at -25 and is highly erratic going between -25 and 25. Fuel Trim Mid starts at .10 and generally stays there exept for brief moments going to 11, but always positive. Fuel trim high stays constantly at 12.65. I'm thinking I might have edited EVOScan wrong for the rear trims and O2 feedback. The rear O2 feeback trim stays near 12.65 except for a brief time when it goes to 0.29.

Both O2 sensors are brand new, one being a Denso and the other being an STD "Standard Performance" I think is the name. I guess the good thing about the graph is that virtually no knock 2 counts was the highest. Though getting 99% IDC in some areas. Not sure if the scale goes over 100% for that, but did not hit fuel cut.

I am having the exact same problems on my 99...