NefMoto

Noob Zone => Noob Questions => Topic started by: Jim_Coupe on January 25, 2017, 11:53:30 AM



Title: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: Jim_Coupe on January 25, 2017, 11:53:30 AM
1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm.. What in he name of Benny could that be.. Forgive me I have no loggs im just curious what function does that? I have never experienced that before. Is it due to knock or someting?


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: nyet on January 25, 2017, 11:55:57 AM
Why guess? I don't see the point.


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: Jim_Coupe on January 25, 2017, 01:05:14 PM
Well i wanted tips because I have to use the damn whole week to investigate some pointless little limiter that Bosch put there that someone here already know about.. I´ll guess i´ll have to look over this file again.. grrr so tired of problems this week.. hate BOSCH and their messed up "political correct german nazis ordnung-muss-sein Merkel uber alles engine system".. Soon ill just dump my A4 in the woods and buy a Subaru..  Yes there i Said it.......  thuffgkågr+k5+gvw45+y,biw45.3+bniu stupid shit..


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: _nameless on January 25, 2017, 02:33:40 PM
no logs, no general info on the setup, zero general knolage sounds lake a awesome combo.


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: Jim_Coupe on January 26, 2017, 12:46:14 AM
You have General info  Me7.5+Turbo+Gasoline  :D What part of the General info is it that you dont understand? heheh. sorry..
If this wont solve it self the easy way i´ll logg later. I have to drive a long way to get to a good straight road.. Living in the center of the City.. I hate it. And if I run into problems no one can pick me up. Moving to the country side soon :)

Anyone else who have experienced the problem i describe? It just Cuts all power like "Snap" when accelerating on boost..


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: Dave9n3 on January 26, 2017, 12:50:29 AM
Would be a load better with logs, i reckon you could have found the problem by now with a log. KFLDHBN maybe? 



Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: nyet on January 26, 2017, 01:01:09 AM
Not even codes, huh?


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: Jim_Coupe on January 26, 2017, 02:10:57 AM
Didnt eve get any codes on this. a bit disturbing.


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: Jim_Coupe on January 26, 2017, 02:19:44 AM
Heres my KFLDHBN i´ll raise the last columns... Looks like they are abit low..  If thats maximum pressure I am boosting over that limit..  Im around 1.3 @ 5000 rpm..   Looks like LDRXN needs to be increades aswell. (Maximum specified LOAD)


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: Dave9n3 on January 26, 2017, 02:38:01 AM
HBN is max pressure ratio map, worth lifting it - but you'd be able to confirm that being the problem with logs.

Likely that KFMIOP and KFMIRL values may need raising to allow for your higher LDRXN


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: KasperH on January 26, 2017, 04:16:43 AM
Heres my KFLDHBN i´ll raise the last columns... Looks like they are abit low..  If thats maximum pressure I am boosting over that limit..  Im around 1.3 @ 5000 rpm..   Looks like LDRXN needs to be increades aswell. (Maximum specified LOAD)

DHBN is tans and nmot, so unless you have some pretty high intake temperatures you don't need to touch it.
What turbo are you running?


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: Jim_Coupe on January 26, 2017, 04:27:58 AM
Im runing a journal bearing Gt2860 T25 with some sort of  eBay tubular manifold 3" Downpipe. 630cc inj..  I have tested this with my old narrowband ECU and had zero problems with the IAT.. Its very coold outside here atm around 5 degrees.

I´ll raise that table and make some logs today. KFMIOP and KFMIRL are already tweaked.


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: spacey3 on January 26, 2017, 04:43:01 AM
Don't you poop your pants just raising the boost without logging?


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: Jim_Coupe on January 26, 2017, 12:32:47 PM
Don't you poop your pants just raising the boost without logging?

I´ll just check Lambda and I hear when it knocks. :)  Yeserday i just raised boost without fear.. 25 degree ign at 1.8bar ron 95 knocked as hell.. Tuned i down to 19 degress :)  It fun to experiment some aswell..  Its also stupid.. ITs my own car though

Problem solved thanks it was KFLDHBN


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: adam- on January 26, 2017, 02:29:25 PM
Wow.


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: vwaudiguy on January 26, 2017, 07:31:46 PM
I feel like Jim_Coupe does this for a living....


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: Jim_Coupe on January 27, 2017, 02:53:50 AM
Hahah I take that as a compliment.. No i dont do this for a living...  This does me for a living..   And meanwhile I am trying hard to get up to work every morning having a boss who always wonder why I always show up late with oily hands and dirt on my pants...  LOL..   I work in a factory :)..


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: spacey3 on January 27, 2017, 05:01:32 AM
I´ll just check Lambda and I hear when it knocks. :)  Yeserday i just raised boost without fear.. 25 degree ign at 1.8bar ron 95 knocked as hell.. Tuned i down to 19 degress :)  It fun to experiment some aswell..  Its also stupid.. ITs my own car though

Problem solved thanks it was KFLDHBN

Haha, you sir are crazy...!

Glad you resolved it :)


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: Jim_Coupe on January 29, 2017, 09:59:47 AM
I got another issue now instead.. i have some boost creep at partial throttle. "Engnine torque limit exeeded".. i know it has to do with ECU see's more boost than it retquest. Never had this problem with my old franken turbo but my gt28 seems to give me this. Im running MBC (i know its not good) im going to get a MAC valve later.. To solve this problem I think im going to raise every map that has to do with boost :)


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: adam- on January 29, 2017, 01:54:11 PM
That is not your problem. 

IRL/IOP.


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: Jim_Coupe on January 29, 2017, 02:51:47 PM
Torque intervention hmm. I raised the last 2 column in KFMIRL as i have done b4. Maybe its KFMIOP tha needs to be checked... thanks -Adam .. ill look over that.


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: vwaudiguy on January 29, 2017, 03:32:06 PM
thanks prj.. ill look over that.

Mean to say Adam?


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: nyet on January 29, 2017, 05:46:33 PM
Torque intervention hmm. I raised the last 2 column in KFMIRL as i have done b4. Maybe its KFMIOP tha needs to be checked... thanks prj.. ill look over that.

NO, you should LOG TO FIGURE OUT THE PROBLEM, not randomly twiddle things. I give up.


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: Jim_Coupe on January 29, 2017, 10:52:35 PM
Mean to say Adam?

:) Ohh.. i mean adam :)


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: Jim_Coupe on January 29, 2017, 10:53:37 PM
NO, you should LOG TO FIGURE OUT THE PROBLEM, not randomly twiddle things. I give up.

I did a log but could not really se what was the cause: Im uncertain on what to log.

What do you suggest me to log? :-\   Req TQ vs Actual TQ?


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: nyet on January 29, 2017, 11:46:13 PM
sigh.


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: Dave9n3 on January 30, 2017, 02:03:27 PM
Taken this from the wiki -


Ensure that mibas remains below miszul to avoid intervention (which you will see in mizsolv) by lowering KFMIOP. This mainly becomes a concern in the middle of KFMIOP.

To verify you have done things correctly, log mifa (or misolv), mimax, mibas, miszul and mizsolv.

If there is requested load intervention, you will see mifa following mimax instead of mrfa, and thus a different rlsol result from KFMIRL than expected.

If there is torque intervention, you will see mizsolv (specified torque) drop from following mibas (actual torque) to following mifa (or misolv) (requested torque). The less actual torque exceeds requested torque the milder the intervention. Note that MAF calibration has a large effect on the difference between requested torque and actual torque. An underscaled MAF may result in actual torque reading very low.


It's all written down in the s4wiki.

Though without logging and posting the logs on here you're kinda pissing in the wind with your mouth open  ;)


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: nyet on January 30, 2017, 03:46:58 PM
BTW by definition torque intervention through mizsolv will not cut requested boost or throttle.

"Torque intervention" has become a synonym for "I am too lazy to log" it seems :P


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: prj on January 30, 2017, 03:59:10 PM
KFMIRL is inverse of KFMIOP.
There is no "lower" or "increase". It is a mathematical function.

Don't take everything that is in the s4wiki for granted, a lot of it is wrong.


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: Dave9n3 on January 31, 2017, 01:16:14 AM
I only really just copied and pasted that select section because it listed some of the variables he should log  :P 


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: nyet on January 31, 2017, 02:55:28 PM
Don't take everything that is in the s4wiki for granted, a lot of it is wrong.

Split thread.

Digression here:

http://nefariousmotorsports.com/forum/index.php?topic=12091.0title=


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: przemek4net on August 31, 2017, 07:27:14 AM
KFMIRL is inverse of KFMIOP.
There is no "lower" or "increase". It is a mathematical function.

Don't take everything that is in the s4wiki for granted, a lot of it is wrong.
Hi,
are y sure?
(https://images83.fotosik.pl/775/10ec41788bd439b4med.jpg) (https://www.fotosik.pl/zdjecie/10ec41788bd439b4)

I used the same factor for load for both maps to get bars.
In IRL @100 throttle I see 1.1b
in IOP load is up to 0.9 I have around 80% of throttle??? (is this like invDW in EDC16/17?)

(limited with LDRXN to around 0.66)

In IOP values like 1.1bar doesnt exist (max is 0.9)
If I would set in LDRXN 2b... than I would drive (fill throttle) 0.9 or 1.1b?
br,
Przemek


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: prj on August 31, 2017, 07:58:47 AM
(https://i.stack.imgur.com/jiFfM.jpg)


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: SB_GLI on August 31, 2017, 08:07:43 AM
(https://i.stack.imgur.com/jiFfM.jpg)

I see the problem... commas everywhere.   :P


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: nyet on August 31, 2017, 11:39:30 AM
KFMIRL is inverse of KFMIOP.
There is no "lower" or "increase". It is a mathematical function.

In theory sure, but stock files are rarely the straight inverse, as you know. And if you take your modified IRL, and just stuff the inverse into IOP, you may still need to rework some areas.

Quote
Don't take everything that is in the s4wiki for granted, a lot of it is wrong.

Too bad it isn't editable by everyone so they can make corrections.


Title: Re: 1.8T Me7.5 Just cuts power Baaam.. around 1bar 4500 rpm
Post by: nyet on August 31, 2017, 11:40:32 AM
In theory sure, but stock files are rarely the straight inverse, as you know. And if you take your modified IRL, and just stuff the inverse into IOP, you may still need to rework some areas, especially since you'll notice that regions you did not touch in IRL now have changes in IOP.

Too bad it isn't editable by everyone so they can make corrections.