What Kind Of Fuel
Thanks
Brad
Any 110 in the tank will be better then none for aiding detonation.
Leaded fuels are not good on 02 sensors and will cause then to die, vp makes a higher unleaded octane called ms109, it is about a 105 pump octane rated (r+m/2).
Leaded fuels tend to be cheaper compared to the high octane unleaded.
When you plan on running high boost (race track or just getting at it), stop by the house and dump in 5 or so gallons of the good fuel.
With a Sd tune you can do say 10psi is tuned in for pump 93, and 15-20 is tuned in for 110+.

