just recently installed a AEM uego wideband and installed it in the B2S1 location and because of that im running an Open-Loop Tune. i read the passenger side reads richer than the driver side so i was thinking about running a bit richer to compensate the driver side. currently at WOT the afr reads 12.6-12.7 and the pcm has a commanded AFR of 12.4 at 27-28* of timing.

my question is should i shoot for 12.4 or just stay at the 12.6-12.7 or/and increase timing to 29/30*?

right now its on stock manifolds. only mods right now is LID and catback exhaust.

 

What type of fuel are you using? Straight gas, ethanol blend?

 

straight 93oct gas

 

Stick with ~12.8 and find a good amount of timing that doesn't knock at that AFR.