#93

I bought a 2019 Mustang GT from a dealer. Car was originally from Alabama. Came with Headers, Intake, and a Tune. I’ve been putting 93 in it for about a year now and just seen a post abt somebody’s AFR reading 9.8 at cruising and Idle, and 20 at Deceleration. People wear saying it’s on an E85...

Just installed new return style fuel system, waiting on a new revision from Lund for e85, currently tuned by Lund on 93. Is it safe to drive and more so hit boost on a return style fuel system running 93 octane in the mean time while waiting on a tune (they said up to 2 weeks) 2019 GT ESS...