Quote:
Originally Posted by Scoobman20
Hey everyone. I'm struggling to figure out where this lean spike is coming from when I reach boost. I replaced the header gaskets and j-pipe gasket thinking it could be an exhaust leak above the O2 sensor, but no improvement. I also looked over the intake and intercooler couplings. Could this be blow-by from AVCS or some other leak? My other concern is my calculated load seems higher than quite a few logs I'm seeing with similar mods.
Here is the OTS Stage2 Big SF - https://datazap.me/u/scoobman20/stag...og=0&data=8-26
Here is the same map with an OL MAF re-cal and the CL delay reduced and CL map high load changed slightly (better but the spike is still there in the beginning) - https://datazap.me/u/scoobman20/stag....91&tmax=99.60
This is pretty much what you get with OTS maps and from what I've read the COBB BIG SF intake is a pain.
The calculated load on some logs you see on here have the MAF along with a few other things scaled to avoid hitting the 3.30 load limit on the ECU. You will usually see it on Phatbotti/Ron Watson tunes.
When I tune for WOT open loop I zero the delay counter. I don't want any of that Evo like lean spool shenanigans lol.
If I were to tune for WOT full time closed loop then it would be the opposite along with a bunch of changes with the CL fueling and other delays.