So went on a 'spirited' cruise up the mountains with some mates on the weekend and everyone who followed me was commenting how rich my car was throwing clouds of black smoke behind it as I'm hitting boost. Leaving them choking/poisoned in my wake. Lol.

The car logs pretty clean AFR's on a 3rd gear pull, with AFR's tapering down to mid-low 11s and not hitting 10s at any point. I logged a couple of 2-3rd gear hits, or just a rolling hard stab of the throttle in 3rd and again AFR's seem OK to me, not getting stupidly rich or anything with low/flat 11s.

Just wondering if there's anything I should be looking for to eliminate this overfuelling somewhere in the process? I was thinking 'Accel Enrichment (Incorrect)' or perhaps 'Async_Accell_Enrichment' tables, but from what I've seen, nobody touches these?

So maybe I just need to log more to reproduce the behaviour and lean out the fuel map in those areas coming on to boost?

 

Did you log it at altitude or while going u the mountain?

 

No I didn't but that's a good point. So the car will run richer as altitude increases as you're adding same fuel with less air density?

The car was tuned at around 580m/1900ft above sea level and we were up as high as 1400m/4880ft at some points on our cruise.

 

There is a barometric compensation that would contribute to your fueling. I haven't played with the stock ECU in a while, but if I recall it was called baro_compensation ....it's a scaler calibration (single offset).

 

Data log 3 3rd gear back to back runs at WOT and post up the logs