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Ignition tuning possible problem

Posted: Sat Apr 29, 2017 7:37 am
by mladjan
I have a problem (assuming with ignition timing) in high revs.
Car is pulling fine in 2nd gear, but from 3rd it doesn't work well from 7.7k to 8.4k
In log, there are multiple examples (this is recorder on track) and one of examples can be seen on 20:45 (also on screenshot bellow).
Only difference I see is that ignition becomes smaller (up to 17), I even removed "Gear ignition compensation" to try it.
Also, I saw few knocks on this long run, its not something huge, but also would like to know what you guys think about that.

Can someone take a look and give me some advice what to do regarding this issue?
Screen Shot 2017-04-29 at 4.32.51 PM.png
LATEST - Bobo race 1.fpcal
datalog0000.fpdl

Re: Ignition tuning possible problem

Posted: Mon May 01, 2017 5:00 pm
by Spunkster
At that time something is causing your throttle plate to close. There may be a problem with the throttle body. Try swapping the throttle body with a known working one.

Re: Ignition tuning possible problem

Posted: Sat May 06, 2017 4:11 am
by mladjan
It was ignition problem. Added 2 more ignition in these high sections, and changed knock ignition limit to 60, so it doesn't retart anything from my map, and there is no knocks.
Thx to Jerome :)