Perfect N/A Air/Fuel
 

Hey guys I have a reflash with all the bolt ons with stock cams and I was wondering what the perfect air/fuel was at WOT. My wideband is saying about 12.0/1 and I thought this was a little rich. The car does really pull though and I haven't had the car dynoed just yet. I hope to when I get back in Florida. Just curious.

12.8 ~ 13.2 from 2500 to Redline is an ideal target AFR for NA.

Is your WB manually re-calibratable or self-calibrating?

perfect depends on how ballsy you are. how ballsy are you?

AEM Wideband
 

It is the AEM which I think is self calibrating......and I feel kinda safe with it at that air/fuel with the Florida heat.

Yeah, 12:1 NA won't hurt anything no doubt, but you're leaving lots of safe power on the table running so rich afr. For a point of reference - FI on the otherhand, you'd want to run around 10.5:1~11:1.

13.5 is about ideal. I was running 14.5 on my NA and it was a bit lean and it was still nothing too much to worry about.

So what is it ? 12.8 ~ 13.2 or 13.5 ?

I would assume anything from high 12's to low 13's is optimum.

truth is you will vary between a given range. It will never be exactly 13.4 throughout the entire RPM band, but rather fluxuate depending on your mods/tuning. Do you have datalogging capability? Ideally you want 14.7 parts of air per part of fuel, that is the optimum stochiometric ratio. Like Gothchick said, when you go FI though, you want to run a little rich to safegaurd against detonation.

10.5 is kinda rich....you probably want it 11.0-11.5 ish

what about for a TT setup.

11.0 is as rich as you need to go...as for how lean that depends on you and your tuner. I've always been at 11.8 wot, but thats just me

I'd like to be at 13.1-13.2 if Possible, that would be about perfect for a N/A Z

14.7 is where you wanna be at idle and cruising

correct...but when you're slamming it is when it matters!

lol at Wot my car stays in the 11's i think thats a little rich for wot.

I'm 10.0 right now. I'm still logging, though.

what is everyone shooting for na air/fuel at wot?

My car is running rich at WOT 11's

mine is altering from 11.5-12.7 at wot i just dont know which way to adjust to get it dialed in

I'm N/A and running 10.0 to 9.9 on WOT. How can you change this? I have a Cobb Accessport, would that work? Thanks.