91 Octane

Goes lean around 3V on MAF and trigger high Knock Retard at WOT.

Used ACN91 gas with 3 gallons ethanol, STP octane booster 60 degrees outside temp

11/12/21

Random cutting under throttle load around 70% , Car jerks backwards as if losing traction but is not. Stage 1 tune 91 octane .

After wastegate solenoid