Quote:
Originally Posted by speedychuck2
Yes, sounds exactly the same to me. I always drop a gear to get the revs up a bit because it annoys the hell out of me, at which point the additional throttle seems to make the issue go away.
I was toying with the idea of switching to linear throttle for more control, but was concerned it may make the issue more noticeable given the larger amount of pedal travel that I will actually be able to apply very low throttle amounts.
I'm doubtful that it's boost solenoid related as you're not really running any significant boost at that rpm. I guess you could just bypass the solenoids altogether and take the car for a run. Obviously don't boost as the wastegates will never open, but it would potentially eliminate them as an issue.
I did wonder if it was issues measuring airflow at very low load? I've always wondered if a map sensor is less accurate than actually having an airflow meter, perhaps the tune highlights this weakness? But then you expect to see it in all tunes and probably the standard car too.
I'm interested to hear what wedge come up with, please keep me informed of any updates as I would like to try these on my car too. Have you tried logging during the hesitation to see if that can help point to the issue? I haven't yet but may give it a go and see if any of the figures appear to be jumping around.
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I did do some logging a few months back. I plan to re-visit the idea again. I believe when I did the logging I could not find anything distinctly wrong but I may have not gotten a good datalog on the issue cause although I can duplicate it, sometimes when in traffic it's hard to do it. I usually need a good long even straight with the light throttle and even consistent road to get it to do it. I think that's why I haven't done much more with regards to finding a solution.
I know for sure one thing temporarily fixes the issue, resetting adaptations. After I reset the adaptations it won't come back for a few days or even a little over a week and of course adding more throttle helps too.
Also it did get a lot better when I opened up the intake manifold fitting to a 1/4inch size for the Tial BOV.