I finally got my wideband hooked up, and logged a WOT run and got 13.2 from 1st thru 2nd gear, on the shift to 3rd it went to 13.9. Is this too lean?

Also, it seems to always go a little leaner on the 2-3 shift. Any way to fix this?

 

I'll let the FI guys tell you their optimal AFR but 13+ is too lean. You need a good tune.

 

between 11.2 and 11.8 is safe. 12.1 is getting on the lean side.

 

11.5 is about right.You are going to at 13.9.
If you are getting leaner as you gain RPM you better check your fuel pressure.

 

Way too lean, as mentioned above 11.2-11.8. Me personally I dont like going above 11.7 I actually shoot for 11.5-11.6 I have leaned it out as far as 11.9 and got no gains so I keep it safe. IMO. Dont take it WO anymore until you get that AFR down, you are lucky it didnt blow already being that lean.

 

Radix @ 5lbs...what kind of tune/tuner do you have?

 

Thanx for the numbers, Im going to spend a few hours working on the tune tonight since the wideband is finally hooked up.

HPTuners, I'm determined to tune it myself.

And I've actually been running it like this for 6 months without the wideband, LOL. Good thing I kept the shifts below 6k or it might have blown up.

 

 

Which wideband are you using?

 

Honestly at WOT if your AFR gets into the 12's you need to let off.