Need help fast. AFR ?

[ibspoolin2]

I just got my safc 2 wired up last week. I got a base tune on it now. At WOT i was running between a 11.1:1-11.6:1. i took some fuel away and now i got it between a 12:3-12:8. That made a huge differance in my power. I only had to tune the AFR after 4 grand to 7grand. Just doing that made my car pull so much harder. What AFR Should i shoot for? I need to know so i can tune it more because im going to the track on the 1st.
Thanks Kevin

 

[GVR4592]

You should have probably left it alone, 12.3:1-12.8:1 is too lean at wot. Are you monitoring knock?

 

[RC_slow_dsm]

Yeah, that's way to lean for pump gas. It probably pulls a lot harder but your internals are suffering from it. I would take it back down to mid 11's.

 

[ibspoolin2]

ok thanks guys

 

[JayRolla]

I see your car is N/A. N/A cars can get away with leaner afr's because they have way less chances of detonation. I would say your running a little lean. I dont know what a good afr for your car would be but 11.1 would be the leanest I would go to be safe.

 

[GSXDNA]

If the car is N/A, i would think AFR's in the mid to high 12s is still safe. Bottom line, you need to be monitoring knock...i think that's the best advice.

 

[JayRolla]

N/A t/e/l dont have knock sensors.

 

[90laserRSfwd]

I see in your profile your using a real wideband. When I started reading this thread I was like WTF ? I hope this guy has a wideband and isn't using one of those blinky POS's... Your safe, and AFR's around 11.1 - 11.4 on premium pump should be ok for you for a reliable car making some N/A power....

4g63 FTW...

P.S - Since you don't have a knock sensor (being N/A and all) I'd recommend getting an EGT gauge and keeping a close eye on it while tuning.