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Title: Seat ME7 Narrowband sudden jump in rl_w Post by: error1997 on March 28, 2024, 11:12:22 AM Hi all,
I am facing issues with rl_w suddenly jumping from 170% to 190%, rlroh_w does the same. mshfm_w is not the issue. I have attache bin, mappack and a log, 5th gear pull on a dyno with 250-300rpm/s acceleration rate. The problem happens at ~ 5200rpm. Have you faced similar issues? Title: Re: Seat ME7 Narrowband sudden jump in rl_w Post by: prj on March 28, 2024, 12:13:45 PM Restore your deleted fault classes and you will probably see the problem quite fast.
It's most likely caused by b_hfm being false and ECU going into alpha-n to msdk_w. Because your msdk_w is calibrated poorly as well, you have a such jump. Title: Re: Seat ME7 Narrowband sudden jump in rl_w Post by: error1997 on March 29, 2024, 02:58:15 AM I have not deleted any fault classes, at least comparing to the original I have, which I have attached.
b_hfm stays true throughout the run. On some runs msdk_w start to raise above mshfm_w before the jump kicks in(as the one attached), but on others, as the one in the first post, msdk_w follows mshfm_w. The wrong thing I see is ps_w is much lower than pvdks_w, 10-20% lower. I will look into correcting that. Title: Re: Seat ME7 Narrowband sudden jump in rl_w Post by: prj on March 29, 2024, 03:08:33 AM In this case there is a correlation "pulling" between the two models.
And this is exactly caused by what you said. ps_w being much lower than pvdk_w at WOT. You must calibrate your manifold model correctly, so that they are roughly equal at WOT. Then correct msdk_w to follow mshfm using WDKUGDN. You can of course disable this correlation/correction as well, but this is not really the correct way to go. There are two such corrections. One from MSDK and one from PVDK, the limits are in these labels: FKMSDKMN FKMSDKMX FKPVDKMN FKPVDKMX Look at BGMSZS module in FR. For a quick fix just setting them all to 1 will solve your issue instantly. But it's of course better to calibrate the model correctly. Title: Re: Seat ME7 Narrowband sudden jump in rl_w Post by: error1997 on March 29, 2024, 07:45:40 AM Raising the adaptation limits solved the issue.
Thank you! Title: Re: Seat ME7 Narrowband sudden jump in rl_w Post by: prj on March 29, 2024, 01:06:15 PM Solved the issue yes, but you also defeated some protections in the process.
If your MAF is reading a little wrong during old age then this helps the load to be correct, so the car does not go too lean/run with too much timing or vice versa. If you disable this correction, then the ECU trusts the MAF almost blind. |