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Noob Zone => Noob Questions => Topic started by: Alexecu on March 26, 2015, 11:20:26 AM



Title: I am losing O2 correction please help..!
Post by: Alexecu on March 26, 2015, 11:20:26 AM
i would like to find a topic i haven't seen here to know if the fkvvs can affect the O2 correctrion because at wot i lose it.ME7.5 wdbnd.or what else can affect that and make me run on failsafe(0.750 which is not true).any help would be glad for but no anyone who tries to make fun to others.!


Title: Re: I am losing O2 correction please help..!
Post by: ddillenger on March 26, 2015, 12:02:26 PM
Is this a wideband ME7.5, and does it occur when you reach the threshold for TABGBTS?


Title: Re: I am losing O2 correction please help..!
Post by: nyet on March 26, 2015, 12:05:55 PM
Please see the sticky for this forum.

Provide logs.


Title: Re: I am losing O2 correction please help..!
Post by: Alexecu on March 26, 2015, 12:06:24 PM
Is this a wideband ME7.5, and does it occur when you reach the threshold for TABGBTS?

yes it is a wideband me7.5 i have set tabgbts to 470 celsius and have tuned via KFLBTS.wrong way maybe.?


Title: Re: I am losing O2 correction please help..!
Post by: Alexecu on March 26, 2015, 12:07:25 PM
Please see the sticky for this forum.

Provide logs.
i will tomorow if god help me and stop raining so bad.!


Title: Re: I am losing O2 correction please help..!
Post by: ddillenger on March 26, 2015, 12:15:48 PM
yes it is a wideband me7.5 i have set tabgbts to 470 celsius and have tuned via KFLBTS.wrong way maybe.?

My question is, UNTIL you reach 470c, do you have o2 corrections?


Title: Re: I am losing O2 correction please help..!
Post by: Alexecu on March 26, 2015, 12:19:47 PM
yes i do.it corrects.i found an old log from vcds if you can understand it..!


Title: Re: I am losing O2 correction please help..!
Post by: ddillenger on March 26, 2015, 12:21:56 PM
I have had this issue as well. I just used LAMFA instead. In order to actually help you, you need to get real (ME7Logger) logs.


Title: Re: I am losing O2 correction please help..!
Post by: nyet on March 26, 2015, 12:21:58 PM
Try to get a ME7L log with EGT data ...


Title: Re: I am losing O2 correction please help..!
Post by: Alexecu on March 26, 2015, 12:43:15 PM
i will try to make me7logger to work tomorrow so i can give you a better image about what is going on..!!


Title: Re: I am losing O2 correction please help..!
Post by: Alexecu on March 27, 2015, 01:28:53 AM
Can anyone confirm if the logger works on windows 8.1..??


Title: Re: I am losing O2 correction please help..!
Post by: Alexecu on March 27, 2015, 07:58:57 AM
i couldn't make me7logger to work on my laptop but i did a few log with vcds and noticed that i lose me lambda correction when engine load is above 191.7%.does this make any sense.two logs if it can be helpfull.i will try again to use me7logger


Title: Re: I am losing O2 correction please help..!
Post by: Alexecu on March 27, 2015, 08:00:13 AM
i couldn't make me7logger to work on my laptop but i did a few log with vcds and noticed that i lose me lambda correction when engine load is above 191.7%.does this make any sense.two logs if it can be helpfull.i will try again to use me7logger


Title: Re: I am losing O2 correction please help..!
Post by: nyet on March 27, 2015, 10:43:25 AM
Can't see a damn thing from that data, other than you are going super lean. You're very close to breaking things.


Title: Re: I am losing O2 correction please help..!
Post by: Alexecu on March 27, 2015, 10:58:08 AM
I am pretty sure. Even I can not read it good. It is super lean 12.6-12.8afr..I will try to download me7logger on other laptop.. But is there any overboost /overload enrich?


Title: Re: I am losing O2 correction please help..!
Post by: nyet on March 27, 2015, 11:00:01 AM
I am pretty sure. Even I can not read it good. It is super lean 12.6-12.8afr..I will try to download me7logger on other laptop.. But is there any overboost /overload enrich?

It is trying to enrich because you are super lean. And it is failing.

STOP what you are doing, you're going to break something.


Title: Re: I am losing O2 correction please help..!
Post by: Alexecu on March 27, 2015, 11:11:46 AM
It is trying to enrich because you are super lean. And it is failing.

STOP what you are doing, you're going to break something.
thanks for the answers but why it thinks it is super lean when on 3500rpm it has about 0.828 actual lambda and correcting it and when it hits over 191% it tries to enrich it which actually leaning me out.calculated egts are about 700celcius..i have notice it is always stop lambda correction after 191% calculated load.does this make sense?all the other time i have ok fuel trims and lambda correction..


Title: Re: I am losing O2 correction please help..!
Post by: nyet on March 27, 2015, 11:14:04 AM
when it hits over 191% it tries to enrich it which actually leaning me out

What makes you think that the cause of it going lean is enrichment?

Have you logged injector duty cycle?

Stop screwing around. Above all, stop taking useless VCDS logs, you're just going to break something.


Title: Re: I am losing O2 correction please help..!
Post by: Alexecu on March 27, 2015, 11:25:55 AM
I use Bosch 630cc and has at most 12ms at 3800rpm which is about 40% I think. I spray methanol after thesevlogs to make real Afr go down for better. The only same issue in my logs is 191.7% load but it must be just a consequence


Title: Re: I am losing O2 correction please help..!
Post by: nyet on March 27, 2015, 11:31:08 AM
Willing to bet your injectors are wide open when you are lean and the correction goes to 25%+

Guess what that means...


Title: Re: I am losing O2 correction please help..!
Post by: Alexecu on March 27, 2015, 11:46:22 AM
the problem is that when i hit that load it stops calulating lambda and goes 0.750 and i have seen it  about -14% before it stop taking care of lambda.it is easy to see it in that log. there is 0.828 actual,0.828specifiedlambda 10.23ms,3280rpm,610celcius. 14.1 correction lambda,O2-Reg.ON and after that it goes
0.750actual,0.797specified 11.13ms,3440rpm,615celsius.0.8 correction freeze,O2-Reg.OFF..i hope i had my injector maxed out but isn't these things strange..??



Title: Re: I am losing O2 correction please help..!
Post by: ddillenger on March 27, 2015, 01:30:50 PM
If you log with ME7Logger, I will help you. If you don't, nyet will yell at you.

Which would you prefer?


Title: Re: I am losing O2 correction please help..!
Post by: Alexecu on March 27, 2015, 01:36:16 PM
If you log with ME7Logger, I will help you. If you don't, nyet will yell at you.

Which would you prefer?

I will try to make a log with me7 logger tomorrow. I will borrow one other laptop.. Please one answer only. I have tuned via kflbts and it is Max 179.30 % (with 0.797afr) . That's where after that I lose my correction. After this it goes to 190%+++.. Are they familiar between them.?