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Is there a newer one for the V9? Seems like there is more data there that hasn’t been figured out yet.
Hi,And the stock BIN number is? I'll take a look and will update the xdf.CheersMeinolf
Something I was thinking about (I’ve been told I think too much) is that on USA models the CO adjustment is blocked. I wonder if there is a data byte in the .bin that would toggle it on thus giving us another avenue of adjustment. I’d like to compare a European version to a US version. Anyone have a Euro V7III or V9 factory .bin they would send me?
Here is a bin of a V7III Euro Factory : https://1drv.ms/u/s!AuqxioVGI9b-hvg3tVpX8dBwkfS47A?e=Taipnq
Thanks, Chrisfer. It appears identical to the V7III bin I have. Now I’m not sure the bin I have is a USA version as I expected to see differences. I downloaded it from somewhere last year for research purposes and can’t remember the source. I do know the V9 version I have is a USA version as it’s from my bike so I still need to find a Euro version .bin of it.
V9 Roamer IAW MIUG3 CM275401 38M3G3HW311 464DVCAO F01 130950203 2020.04.28
Here is a V9 Euro : https://1drv.ms/u/s!AuqxioVGI9b-iZBaQRJSqFXUoRhnMQ?e=lIuOga
Hi,I've written a XDF for another version (see first post in this thread), the differences are slight and I will provide an updated XDF for this version later.CheersMeinolf
The MIU G3 does not have a CO trim adjustment option.
So, in no more than a three or four sentences, what does this all mean?
Where do the traction control modes figure into this?
If I want to make any small changes to fueling (assuming I have the lambdas turned off) would it be best to make those changes in the right and left cylinder main fuel tables and leave everything else alone or divide the changes up across other tables?
Hi,What do you mean by traction control modes. I have not extensively researched the different models using the MIUG3, but haven't found any mention of traction control modes in the user manual or the wiring diagram. On other models any traction control is activated by discrete switches connected to the dashboard, which then sends this as part of a CANBus message to the ECU. I've identified the CANBus sections and packet IDs in the code, but having no log of the stuff being sent on the CANBus makes it very difficult to understand the content and meaning.My experience is that the lowest hanging fruit for improving engine performance (not neccessarily torque/power) is to check and correct, if so required, the synchronization of AFR/Lambda between the cylinders. My experience after logging Lambda, rpm, TPS, etc on a V11, a Jackal and a Norge over more than 40.000km is that the fuel values are not optimized for this. Setting this right will result in 90% of the achievable improvement, anything else really is just cream on top. Nice to have, but not essential.Changing any of the trim and scaling scalars or tables generally not a good idea. In the past I've found that Marelli uses airtemp/pressure correction values in the respective tables of the 15M/RC and 5AM which are wrong. They differ from the values dictated by the general gas equation pV=mRT, I created a spreadsheet several years ago to calculate the correct values and used this in my BINs.Turning off the closed loop operation is not really a good idea unless you a willing to deep dive into this topic. The engines are designed to work well at Lambda 1.0 and the resulting fuel and ignition values are closely intertwined. Changing Lambda absolutely requires corresponding changes in ignition values.On a different note, you are an E.E.? Have you taken a closer look at the MIUG3? Understanding how the I/O pins of the ECU are internally connected to the CPU and ASICs and stuff would be very helpful, in fact it's a prequisite, to make further progress.CheersMeinolf
Turning off the closed loop operation is not really a good idea unless you a willing to deep dive into this topic. The engines are designed to work well at Lambda 1.0 and the resulting fuel and ignition values are closely intertwined. Changing Lambda absolutely requires corresponding changes in ignition values.CheersMeinolf
My V9 has the MGTC system(Moto Guzzi Controllo Trazione). It reduces acceleration if it detects wheel slippage - for instance - if you accelerate in the rain and lose traction it reduces your acceleration to compensate. My thought is either the CPU has to back off the fueling or spark timing to compensate or the ABS is applying slight braking. If you see nothing in the programming then perhaps the latter applies.
On examining the map I see the O2 sensors are turned off which makes sense because they would negate any changes to the fueling
...when the current XDF has the right and left cylinders incorrectly labeled as warm and cold
However no corresponding changes in ignition timing were made.
...I have hesitated to actually open mine up to ID the chips and do any circuit tracing. Maybe I should start there.
Fascinating stuff. Thanks for sharing all your hard work. Here’s a dumb question. I have a 2013 V7 Stone. I foolishly left my mufflers out in the rain for a month while working on my clutch. When I put everything back together, I now have a constant check engine light, which has persisted for 35,000 miles now. I’m convinced it is due to failed/rusty lambda sensors, but haven’t confirmed it. Here’s the deal though. The bike runs just fine. I get the exact same gas mileage. It starts fine cold or hot. The only difference is that about 10 seconds after a cold start, it obviously gets too lean and won’t idle well unless I rev it to 1500 rpm or more and let it warm up a minute or so. When warmed up it idles fine. Is this the behavior you would expect give this stock fuel mapping and a presumed failure of the lambda sensors?I probably need to get a Bettle map but just haven’t gotten around to it. If this is somehow horrible for my engine please let me know.
Since part of the time at RPMs below 4k it is operating open loop ie not at a steady cruise, wouldn't it be a safe assumption that the open loop base map is reasonably safe if the O2 sensors were turned off. There have been a few mentions in other threads where just turning them off resulted in smoother operation or elimination of snatchiness. Assuming, of course, a basically stock bike with stock exhaust not needing a substantially richer mapping change. I want to try it on mine.
Hi,recently some question about the MIU G3 as used in the V7 III were asked in the German Guzzi forum. So, another deep dive into a BIN was taken, disassembling and reverse engineering the code as done previously for the 5AM BINs.The result is this V7III XDF