MrCain Posted March 2, 2015 Report Share Posted March 2, 2015 It would seem so at first glance, but if you compare the ign angle in your logs with the cells in the table using the trace function you will find out they are actually correct. One thing that might be confusing is that the rpm axis looks upside down in respect to the m44 maps. When looking at your logs, also keep an eye on the ram_20 parameter. A value of 33 means wot is detected, and m43 will use the wot ign map unless that's disabled ofc. A value of 34 means idle or decel. 32 means part load. I also saw it spike at some points on knock events, so I'm trying to trace this in the bin. Maybe it can also be used to discern actual knock retard from adaptive knock retard. btw, one of the first mods I would try is setting those first 3 TCV pilot cells to 40% or so. This will make your load curve way more stable. Gotta play with it to find the optimum value ofc. Damn......youre totally right..... How could i ever doubt about you! TCV pilot cells i will set to less then 20% With 40% i will hit 1bar Link to comment Share on other sites More sharing options...
venderbroeck Posted March 2, 2015 Author Report Share Posted March 2, 2015 The first three cells are before the spool up point of the turbo. If 20% still makes you reach 1 bar, you have to lower the load a bit I think. That 1 bar is overshoot correct? What I've also done in my curent tune is to match the requested load to the load the engine can physically reach before the turbo spools. This will prevent the tcv duty from rising too much as well. I'm currently looking at making the tcv pilot control map 2d as in m44. This map is used by the boost control logic when calculating the tcv duty cycles, even after it determines the entry point. edit: another little trick that may be useful. I had a seperate wire coming from the ECU as a k-line. On m43 the k-line is connected to pin b5 instead of b36 in m44. I got tired with running this wire to the cabin via the passenger door everytime I switched from m43 to m44, so I traced b36 inside the m43 ecu. It doesn't seem connected to anything (parts where missing on the pcb). I then just soldered a wire directly from b7 to b36 inside the m43 ECU. Now I can just swap between m43 and m44 and use the same k-line connection for both. Link to comment Share on other sites More sharing options...
gdog Posted March 3, 2015 Report Share Posted March 3, 2015 Concerning the widebandcontrol: It performs excellently. We have found a way to add sixteen extra logging channels to the ECU without using an extra microcontroller like an arduino. The data of these 16 extra channels are read by the microcotroller of the ECU itself. Advantage of this method is that the data of these extra channels becomes available in the bin, making extra functionality possible. For example: an EGT treshold, when EGT gets higher then a certain maximum (set by the user), requested load will be reduced as a safety measure. This is awesome news! As I've said before, WB control would be nirvana for DIY tuners since you (theoretically) should be able to dial in the AFR you want for a given load condition. Maybe that's possible now w/o WB control but don't you have to play games with the ECU programming, since it's always trying to drive toward stoic AFR? So where did you find these extra ADC channels? Was there hardware on the ECU that wasn't being utillized? Are these dedicated channels, or MUX'd? This is all very interesting! This topic deserves its own thread IMO.. Link to comment Share on other sites More sharing options...
Piet Posted March 3, 2015 Report Share Posted March 3, 2015 We are using available hardware of the ECU with some extra circuitry, multiplexing is involved. We could expand the number of channels to 32 or even 64 if we wanted to, but that would become overkill and pointless. With the WB control you really can dial in AFR for any given load/RPM. No more driving towards stoich by the ECU, unless you want him to. Link to comment Share on other sites More sharing options...
MrCain Posted April 10, 2015 Report Share Posted April 10, 2015 Started to play with the M4.3! Got one question: the ING table wot switch => when setting it to 08 it disables the WOT ignition? So only the part trottle table is active? Still not knowing the purpose of the 2 ignition tables…. One table is enough for me Link to comment Share on other sites More sharing options...
venderbroeck Posted April 10, 2015 Author Report Share Posted April 10, 2015 exactly, be careful though, make sure the part throttle table isn't advanced too much by comparing it to the wot table. Link to comment Share on other sites More sharing options...
MrCain Posted April 10, 2015 Report Share Posted April 10, 2015 Great function BTW! its difficult enough to concentrate on one table Link to comment Share on other sites More sharing options...
venderbroeck Posted April 10, 2015 Author Report Share Posted April 10, 2015 I think it was meant for use with a maxing maf. The load will then start to decline on WOT due to the maxed maf. The use of a wot table prevents hitting cells under wot, which are also used onder partial load. I've made a few mods with which you can fix this behaviour. It keeps the load at a fixed number when the maf maxes out. This mod also allows a maf factor to be entered directly into tunerpro without the use of the maf editor. Just a straight factor, the rest is taken care of in the bin itself. I will release it as soon as I get the time. at a side note: the m44 maf editor wont work on m43. The next release will take care of the maf factor though. Link to comment Share on other sites More sharing options...
Boxman Posted April 10, 2015 Report Share Posted April 10, 2015 Tiny question, how does one fit an OBD II connector to M4.3 with OBD I? Link to comment Share on other sites More sharing options...
rkam Posted April 10, 2015 Report Share Posted April 10, 2015 J1962 Pin 4: GND J1962 Pin 16: + If you want to connect M4.3 to a standard KKL interface you should connect ECU pin B5 to J1962 pin 7. M4.3 cars equipped with J1962 connector would normally have B5 connected to pin 3 in the connector. Please take a look at Volvo Motronic 4.3.pdf installed with Motronicsuite, or find it here: http://www.piese-volvo.ro/droid/volvo/motronicsuite/ Link to comment Share on other sites More sharing options...
venderbroeck Posted April 10, 2015 Author Report Share Posted April 10, 2015 I've just run a wire from pin b5 to my vag com through the firewall. You can either solder the wire directly to pin b7 in the ECU with a connector, or tap it off inside the ECU loom. I drilled a hole in the vag com cable, soldered on a sigarette lighter plug for power, and a connector for the wire coming from the ECU. Quick & dirty, but it works well without destroying the vag com too much. Better to use an old female connector though. The pinout can be found online I think. You only need the power, ground, and k-line connections as Rkam describes. Link to comment Share on other sites More sharing options...
MrCain Posted April 11, 2015 Report Share Posted April 11, 2015 I think it was meant for use with a maxing maf. The load will then start to decline on WOT due to the maxed maf. The use of a wot table prevents hitting cells under wot, which are also used onder partial load. I've made a few mods with which you can fix this behaviour. It keeps the load at a fixed number when the maf maxes out. This mod also allows a maf factor to be entered directly into tunerpro without the use of the maf editor. Just a straight factor, the rest is taken care of in the bin itself. I will release it as soon as I get the time. at a side note: the m44 maf editor wont work on m43. The next release will take care of the maf factor though. Hmmm......Maybe better to use the part trottle map until you fixed the mod BTW: is the checksum for M4.3 the same as the one for the M4.4? Link to comment Share on other sites More sharing options...
venderbroeck Posted April 11, 2015 Author Report Share Posted April 11, 2015 Yesit is. The lower bank part at least. Link to comment Share on other sites More sharing options...
MrCain Posted April 11, 2015 Report Share Posted April 11, 2015 Ok, so i can use it for both systems. Link to comment Share on other sites More sharing options...
venderbroeck Posted April 11, 2015 Author Report Share Posted April 11, 2015 Yes, simply volvo's plugin works for both m43 and m44 luckily. Link to comment Share on other sites More sharing options...
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