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recent anomaly in engine performance... flashpro bug?

Posted: Thu Apr 02, 2015 2:19 pm
by iketh
at exactly 0:20:39.897 of the log, spike in MAP without a change in tpedal or tplate... started about 2 weeks ago and can be felt while driving (almost feels like a misfire) and always occurs at exactly 4100 rpm

Re: recent anomaly in engine performance... flashpro bug?

Posted: Thu Apr 02, 2015 3:20 pm
by Spunkster
You have not posted your calibration

Re: recent anomaly in engine performance... flashpro bug?

Posted: Thu Apr 02, 2015 3:38 pm
by Hondata
Are you sure you have the time in the datalog correct (20:39)? Everything looks ok at that point.

Re: recent anomaly in engine performance... flashpro bug?

Posted: Thu Apr 02, 2015 4:40 pm
by iketh
20:39.9 spike in map from -6.8 to -5.3"/psi and massive spike in injectors/duty

Re: recent anomaly in engine performance... flashpro bug?

Posted: Thu Apr 02, 2015 4:45 pm
by iketh
duty jumps from 30 to 36% and injectors 9.06ms to 10.61ms

Re: recent anomaly in engine performance... flashpro bug?

Posted: Fri Apr 03, 2015 7:51 am
by Hondata
This is what I see at 20:39. Everything looks ok.
throttle-dl.png
throttle-dl.png (12.18 KiB) Viewed 4748 times
The only thing I have noticed is that just before (around 20:36) you go from closed loop to open loop, the switch being 80 kPa. Because you have set the WOT compensation tables over 12.5:1, it may do odd things like staying in closed loop - see the help file (do not set the WOT compensation values over 12.5:1).

Re: recent anomaly in engine performance... flashpro bug?

Posted: Sat Apr 04, 2015 7:39 pm
by iketh
39.9... you're forgetting the .9... look at injectors and map

Re: recent anomaly in engine performance... flashpro bug?

Posted: Sat Apr 04, 2015 7:41 pm
by iketh
it doesn't matter what type of tune I use, they all have that 4100rpm hiccup

Re: recent anomaly in engine performance... flashpro bug?

Posted: Sun Apr 05, 2015 3:14 pm
by iketh
22:06.195s injector spike from 13.46 to 17.83 again at 4100rpm... that's not ecu doing something weird with closed loop, that's a bug in the hidden fuel tables for AFR tunes (the tune is the same I attached above)

Re: recent anomaly in engine performance... flashpro bug?

Posted: Mon Apr 06, 2015 10:41 am
by Hondata
As pointed out above, it is because you have changed the WOT compensation tables to values leaner than 12.5:1. The weird injector duration is from the secondary o2 sensor running PRISM as higher load than it was designed for.

Re: recent anomaly in engine performance... flashpro bug?

Posted: Mon Apr 06, 2015 12:33 pm
by iketh
sigh I already tested that... I will switch back to open loop and upload another log... also for this application 13.44 is the ratio when it remains closed loop not 12.5....

Re: recent anomaly in engine performance... flashpro bug?

Posted: Mon Apr 06, 2015 12:34 pm
by iketh
also secondary o2 sensor is disabled

Re: recent anomaly in engine performance... flashpro bug?

Posted: Mon Apr 06, 2015 1:33 pm
by Hondata
In the first datalog at least, the jump in injector duration at 20:39.9 is from the closed loop to open loop transition at 80 kPa. I don't see any change in MAP.
You need to change the WOT compensation tables so that no values are greater than 12.5:1 It does not matter if in open or closed loop or if the o2 sensors are disabled, WOT compensation table values should not be greater than 12.5:1.