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Title: Location of LDRXN on S4 2001.5 2.7T L-Box Post by: conradz on November 24, 2014, 12:29:16 PM I'm trying to make a tune for my 2001.5 S4 with tiptronic and L-Box ECU. I was trying to modify the LDRXN table, but it doesn't seem to make any difference. I saw in another post about the 551R box that it has 2 different LDRXN tables, one for auto and one for manual. Is this true for the L-Box (which always has auto trans) also? I'm using an M-box xdf file that only has LDRXN_1_A defined, so I'm assuming I need to edit the LDRXN_0_A table. If this is the case I would like to know the location of the table.
Some background: I'm logging using me7logger and get a max rlmx_w of ~140. rlmax_w never goes above 130, which limits rlsol_w to < 130 also. In s4wiki it says that rlmax is limited by KFTARX, but I have set all values in the range I'm targetting to 1 for all temps, so it shouldn't be that. rlmax_w never seems to budge when modifying LDRXN_1_A, so I'm pretty sure the problem is that I have the wrong table location. I can send my bin file if that would help. Any help is appreciated as I'm a bit of a noob at this. Title: Re: Location of LDRXN on S4 2001.5 2.7T L-Box Post by: ddillenger on November 24, 2014, 02:47:54 PM There is only one :)
Read the community thread, post! Title: Re: Location of LDRXN on S4 2001.5 2.7T L-Box Post by: conradz on November 24, 2014, 07:17:24 PM Good to know, apparently that isn't my problem then. But somehow it appears that rlmax is not following LDRXN at all.
Are you saying I should post this problem on the Community Project: Stage 1 2.7T S4 thread? I read over the whole thread and couldn't find anything relating to my issue. I found the thread pretty convoluted to follow also, but I can try if you think that would be the correct place to start. Title: Re: Location of LDRXN on S4 2001.5 2.7T L-Box Post by: nyet on November 24, 2014, 11:17:20 PM HBN...
Title: Re: Location of LDRXN on S4 2001.5 2.7T L-Box Post by: conradz on November 25, 2014, 01:05:26 PM Pretty sure it's not HBN, although I could be missing something. I'm setting LDRXN to be ~160, which as I understand it should not hit HBN. I also tried the NVR Stage 2++ map for KFLDHBN and it still gives the same result. No matter what I do rlmax won't go above ~120.
I'm starting to think maybe it's a problem with a sensor, but it's really weird since the MIL isn't on and a regular OBDII scanner doesn't find any codes. Somehow NefMoto picks up P1548, P1453, P0333, P1131, and P1457, which are relating to EGT and O2 sensors. I deleted and disabled the SAI and disabled the rear O2. I am also running the 2.0T coil packs with the associated tune changes. Anybody have any ideas? Why would NefMoto pick up DTCs that I can't find with other readers? Title: Re: Location of LDRXN on S4 2001.5 2.7T L-Box Post by: nyet on November 25, 2014, 01:08:27 PM Post logs please...
including ldrlms_w and ldrlts_w Title: Re: Location of LDRXN on S4 2001.5 2.7T L-Box Post by: conradz on November 25, 2014, 01:34:32 PM OK, here is a log from ME7Logger including those variables. You can see rlmx going above 160 but rlmax stays at < 120.
Title: Re: Location of LDRXN on S4 2001.5 2.7T L-Box Post by: conradz on November 25, 2014, 01:37:34 PM Oops, forgot to attach the file. Here it is.
Title: Re: Location of LDRXN on S4 2001.5 2.7T L-Box Post by: nyet on November 25, 2014, 10:25:11 PM Looks like req load is following ldrlms (from LDPBN), which means B_brlmx is set...
I'd get VCDS and do a proper scan for codes. From the FR: Quote Mittels der Systemkonstanten SY_TFMO, SY_GGGTS werden die ¨Oltemperatur (toel) bzw. die K¨uhlwassertemperatur vom Kombiinstrument (tmki) ¨uber Sensoren eingelesen, deren Signal in %GGTOL bzw. %GGGTS ausgewertet wird. Stehen die entsrechenden Gr¨oßen am CAN zur verf¨ugung (tolc bzw. tmkic) wird auf die CAN-Gr¨oßen, bzw. im Fehlerfall auf Ersatzwerte umgeschaltet. Im Falle eines erkannter Systemfehlers tritt eine zus¨atzliche n-abh¨angige (Druck-) Begrenzung (LDPBN) in Kraft, die analog zur H¨ohenbegrenzung auf F¨ullungsebene umgerechnet wird. Das Zur¨uckschalten erfolgt nur bei resetiertem Ausl¨osefehler und Leerlaufbetrieb (B_ll). Looks like if the instrument cluster detects an error in coolant or oil temps, B_brlmx is set. Don't bother doing any further tuning until you get rid of ALL your codes. Period. You're asking for trouble if you are doing this w/o VCDS... |