Are you running a speed density tune?

If Mafless, then that's the problem. MAF is great for helping the PCM determine how much fuel is needed in a rapid throttle transition. Having your load sensor be in the manifold causes the PCM to have to play catchup under rapid transitions, as the pressure change is already increasing cylinder pressure by the time the MAP sensor voltage changes and the PCM is able to calculate fueling for it.

 

Yeh if your not sd, it's all on the maf pretty much.

your EFI as well right? I remember posting your ve table up. maybe justin can help ya (stupid efi, gives me a headache LOL must...get...another...drink)

sooo, if your 2bar and if you are SD, can you post a scan so we can see the cell you are in when you are lugging? the luggin for me is cuz of too much fuel cuz I put so much in those cells to compensate not having a maf when crack the throttle. obviously lugging as well cuz it's in the boost cells(or damn close) at low rpm.

 

I'll post stuff up later when I get home...I am SD right now, is it possible to run a 2 bar MAF tune?

 

justin will certain take you for a ride on that one. Yes.

 

It definitely SHOULD be possible. I've got issues with MY tune right now not letting me. There's either a bug in my Operating system, or something's not right with my PCM. Not getting any ECT enrichment after startup enrichment disappears (causign super lean spikes in SD mode til it warms up), and with MAF enabled and airflow calculations enabled, I lean out into boost (fueling pegs at the 105kPa column).

Going to try an 04 OS this weekend and see if that fixes it.

 

Let me know how it goes, I wonder if an 01 O/S would do it too? If so, I'll start looking for another MAF since I sold my old one.

 

I'll bet this is what you are seeing. I had the cruise on during this log so there was still a delayed kickdown. I have been doing my tinkering with only the "Normal" column of the trans tables so far. Seems pretty good with my current setup.

 

What YOU'RE seeing is a lean condition caused by rapid throttle increase while in an SD tune. Even when not in SD mode, where fueling is plenty rich, it'll still knock at that point with the TCC still locked...

 

No rapid throttle transition in this case. Just loading up in 4th with the TC locked. Here's a shot of the portion of the log associated with that KR. I have played with the throttle while locked and watched the highlighted cell just move back and forth across the 2000 RPM row of the map. RPMs won't budge without a kickdown/unlock.

Although I do see those .5 - 1.0 sec lean spikes immediately following rapid throttle transitions that you are referring to. But I never see KR associated with that for some reason.

 

DAMMITT, EFI LIVE AND CANADIAN!!! celcius, kmh...killing me!!!
70mph, 3.77#'s of boost

looks like you got 2 whacks of kr. WHen you started the load, tip in, and then in the middle. The decay rate hides them individually ofcourse, but looks like your tipping in from the pic, 30 to 50%tps is a 20% change. Your right though, the 4th gear and converter makes for a pinging situation if you don't lots of forward momentum.