i was wondering, what should my air fuel ratio be when driving at cruising speeds (freeway/highway) driving on a turbo AP2 or any car for the matter? i know WOT should be like 10s or 11s but on the freeway when at a constant cruise speed i think ive seen mine at 14s or maybe even higher on a AEM Uego. yes, i have Greddy EMU and it was tuned in like 3 hours.

please shed some light on this subject

 

Mate, it will bounce around low 15's to low 14's and inbetween. The ECU is trying to bounce around stoich e.g 14.7

From the little you say it seems totally normal .

 

pretty sure anywhere from 14-15.5 is safe for just cruising on the highway.

 

Yup! 14-15 afrs.

 

what if it hits 16s? it was just going through my head from the last time i drove. i dont remember too well because its been almost a year since ive driven her but i plan to drive her on vacation and i want to make sure i know whats going on before i drive her from fresno to the LBC. last time i drove it was for about 3000 miles in a 2 wee period and the engine is still kickin

 

To be honest, you can cruise anywhere between 13-16 but obviously your gas mileage will suffer. I aim to be between 14.8-15.2. If it cruises at 16 it won't hurt anything but I wouldn't opt to stay at that nor go any leaner.

 

right on, ill let you all know when i get back to the states and drive. i hope its not that stupid Greddy EMU acting like a beeotch. i still have to deal with smog, i hope this isnt an issue.

 

mine was set at 15.5 target AF,
the actual range was usually 15.2 to 16

 

any difference between F22C & F20C AFR? both should be around 14-15?

 

Partial throttle doesn't really matter. It's supposed to be around 14.7 Any time you let off the gas it goes max lean on the gauge. Mine bounces between 13-17 all the time.