Originally Posted by Cab_Burge
What AFR is a "tad lean"?
I like at or above 14.8 AFR at light part throttle cruise in high gear below 2200 RPM on 91 octane pump swill up


Right around 14.5-14.8.....somtimes it will go to 15.0 which I really don't like. Doesn't seem to bother it, but I do not want to burn anything up. Most of the time she is closer to 14.0....This is why I like efi...Set the AFR and forget about it...

'70 Cuda,...605 EFI Hemi Street Car (6.20 best pass, 1.33 60ft)
https://www.youtube.com/watch?v=WYw6RA-k5Bk (6.25 at 108.75mph from inside car)
https://www.youtube.com/watch?v=3zQEb9uxFng (6.25 at 108mph from outside car)
https://www.youtube.com/watch?v=JCvfzsC4NgM (9.9)

'66 Barracuda AWB Stretched nose Blown 440 Car in build stage

'71 Duster Drag Car 400 Low Deck 512 best 6.002 at 115.44mph
https://www.youtube.com/watch?v=Znuo3jMUXTk