checking air fuel ratio from data logging on flashpro, how accurate?
 

hey guys, i decided to datalog my s2000 today just to see how everything looks. im actually pretty new at this but i noticed that my air fuel ratio during WOT was around 10.14 and 12.25 (corrected)

I am confused what the difference between the two are. i did a bit of searching but didnt have any luck, other than they both will be different from each other.

my current set up

2006 s2000
sos stage 2 supercharger with 9psi pulley
rc650cc injectors
berk 63mm high flow cat
divert-er valve is dispensing to atmosphere
stock cluck and flywheel
91 octane
tuned from a very reputable shop in so cal

here is a screenshot of what i am talking about. throttle plate is 100%

Attachment 189269

shed some knowledge on me guys, i dont want to blow a motor lol

also temp outside was 93 and i smelled my dipstick and no smell of gas!

Look at the AF.Corr value on your sensor list on the left. It's showing 12.25:1. It's pretty accurate to within a couple 1/10's. However, as you go richer, the reading decreases in accuracy. For WOT, you want to look at this corrected value.

Data log a WOT you're run to redline, and PM me. I will check it for you if you're worried.

Thank you so much. I had a feeling this was the case but I needed someone else to verify. I just ran a 3rd gear wot and my afcorected ratios are looking good.

are the air fuel ratios off because of the o2 sensor on the 06 doesnt actually read correct unlike if i get an aftermarket bosch one?

No problem.

Who better to explain it, then Hondata themselves. Here ya go:

http://www.hondata.com/help/flashpro...correction.htm