ok i ahve a 88 turbo II with:

s5 turbo
racing beat turbo back exhuast
Hks filter with Tid mod
turbo xs bov
and im running about 10 -13 psi

and my apexi autotimer said my a/f os 12.2 at 100 miles per hour, is that too lean?

i have a walbro 255 on the way.

then injectors but i dont have an safc yet

 

Well that depends.

Was it 100mph at WOT with full boost. Then yes. You want an AFR of 11.4 or so under full boost. But I doubt that 12.2 is putting you in any danger zone.

But if that is cruising at 100mp with no boost, then its fine. Really your low load/cruising rpm AFR's can be a lot leaner (ie 14.7:1)...

 

i was at about 1/2 thottle maybe a little of taht