Talon

iTrader: (3)

I had my Evo dyno-tuned (though I won't say by who right now) and just now got around to looking at the dyno charts. I noticed that at ~3000 rpms the AFR seems to be falling from 12.5:1. This seems to be pretty high especially since the turbo is starting to boost hard, as I thought most anything above 11.5:1-12:1 on an almost stock Evo was pushing the 'safe' limit. It then drops to the mid, and eventually, low 11s.

I want my car to run safe would rather sacarifce a few HP for relability. I just wanted to see if this was okay.



My mods:
Drop-in filter
Busch TBE w/ cat and bullet
MBC
Walbro 255 (maybe this makes it okay?)

Thanks,

Rnm

iTrader: (4)

I'm no tuner, but that looks to be fine. If it was that lean at high rpm's, then I'd be more worried.

Talon

iTrader: (3)

Thanks.

Anyone else have an opinion?

anjapower

iTrader: (18)

that seems to be typical...they run around 12 or so at the onset of boost, and richen up as the RPM goes up.