hey guys, im gonna start trying to tune up my X and im trying to figure out this whole afr jazz. i've searched high and low and found abunch of threads that just confused me more than anything. i just got my AP and my ETS intake is coming in soon i hope and i will be running the 93 oct cobb sf map as i've seen that recommended for the ETS intake.

my question for you guys is, what is safe afr's and all the other things i should be looking for? i'm hoping this AP gives me the numbers as i dont have any gauges yet.

 

You can't get a accurate AFR from a narrowband... you will need to get a wideband. There are quite a few threads with recommended AFRs.... if you don't have this down I might suggest reading more before you start digging in. 4B11s are expensive.