Hello !
I am trying to use the autotune feature on my KPRO4 but I am running into a problem and autotune is not working properly.
Vehicle: Lotus Elise Mk1 with Honda K20A + JSRC from a Euro Type-R
O2 Sensor: PLX SM-AFR wideband with Analog and Digital connection
Hondata KPRO4, bought from CPL Racing in May 2015, serial 40496
Honda ECU PRA 37820-PRA-E13 Serial 399261-4Y30
K-Manager Version 4.3.3.0
I was trying to use the autotune feature today in order to get the fuel correct for my car.
After searching this forum and checking the k-manager help file I was able to set up the autotune feature, so i thought.
I have set the cams low and high both to 0 degrees, locked VTC on low till 7000 rpms, uploaded the calibration, switched on autotune and started to drive. I heard a beep exactly once and not any more after that. I was wondering if I had my Wideband overlay settings incorrect and checked them again. Seemed right to me.
Got another beep — during a shift… so I started to watch the sensor display on my laptop closely. Autotune actually did make changes to the calibration but only till a TPS of about 3%. Once I depressed the throttle by more than 4 or 5% the autotune no longer worked. Checked the settings again, played with them but somehow I cannot get this work.
I have attached 3 screen shots from my settings.
At this point I was about to give up and was wondering if I was doing anything wrong, maybe I had overlooked a setting or might this be a bug in k-manager with my PRA ECU ?
But then I looked at my fuel table, and there were changes made.. .all over the place. Actually fuel had been changed in a high pressure column instead of column 1 - 4 where I was driving. Now this really does look like a bug… If you take a look at the enclosed log file I was not hitting the high pressure columns at all since I actually never fully depressed the throttle.
Please take a look at the enclosed screen picture I made from the changes.
changes.jpg
Any help is highly appreciated, thank you very much in advance.
Best regards, TC
Attached:
Calibration
Log File
Screen Shots
KPRO 4 Possible bug in autotune feature ?
KPRO 4 Possible bug in autotune feature ?
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Re: KPRO 4 Possible bug in autotune feature ?
And this is the calibration:
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