I wish it was only 100. Temps have been 110 last couple weeks
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Do not have that issue on my tunes.
It is pulling fuel so I guess I'm not looking at it right. I see negative fuel trims as running richer so I try to adjust it closer to +/- 5%.
so I should do all VVE tuning first then MAF, correct?
Guess you can do that way. I don't.
I'd bet tuning the injector tip temperature will fix you guys' ambient-temperature-related fueling swings... especially with those 1150cc injectors, Dzz88. If you tuned in the hot, 110 degree afternoon with a stock inj. tip temp curve, you're getting a lot of extra fuel dumped in there at low throttle inputs. Then, when you go for a drive at 7am the next morning when it's 70 degrees outside, you will be getting little to no extra fuel added. So basically- when you tuned it in the afternoon, you had a lot of injector pulse width adder that's no longer there in the am. If you are in open loop, it will go lean.
Yep, lots of posts about this. Some ignore this and deal with wide swings other choose to make the issue worse by zeroing the table out. Considerable time was spent on this and it always proves out. It has nothing to do with the manufacturer of the injectors. It is a construct of the ECM and software running.
Makes total sense and probably what we are seeing. I am still on Stock injectors but will be switching to ID850's soon. I'll look for the threads and read and learn...
Made a quick histogram with Injector Tip Temp and used RPM and Cylinder Airmass to plot there is quite a difference in the AM vs PM. Note sure if that is what I should watch but time to read...
I'd like to have that...
Original thread and all the work to get it done.
https://forum.hptuners.com/showthrea...h-after-Flash/
Question I have is how can I be rich after flash when I haven't flashed anything? The only thing that changes is outside temp. I am not changing the tune. I'm just logging.
It is all covered in the threads. Rich after Flash is a condition caused by injector tip temp not being set correctly. Many other items it effects. Including correctly tuning a MAF.