FAST XFI tuning question

[GregWeld]

67rag --

Jody / Frank ....

This is the same motor - with the dyno sheet posted earlier in the thread - that has (IMHO) VERY lean conditions - especially at peak torque and WOT... they were in the high 13's and low 14's at peak torque....

So if he's 'running' lean - it could be a lean miss - even with low load conditions - and he said he's observing A/F's on the dashboard at 14.5's and even as high as 15. I'm ASSuming that they observed these readings while cruising at the "trouble" point. I'm thinking if he's seeing 15 A/F readings -- he's feeling a lean miss...

If his VE's are close -- I wonder if he couldn't change the "BLOCK" of A/F at his trouble spot -- to something like 13.4 or 13.6 etc -- while driving === and see if the miss/hiccup goes away. If it does - then it's just a matter of finding the leanest A/F ratio he can run at that Map point... and run with it. If it's still there -- then we know it's not a lean miss -- and he can start working on more "complicated" solutions?