hey inasnt, i know you think i might not know much about cars, i hope you didnt come to that conclusion just becasue im running premium with a c16 tune,
i might be a little neive but im not stupid when i had the tune done i made sure it wasnt tuned to its peak just incase of situations like these were i could run optimax or premium unleaded if C16 wasnt available, ( which it wasnt). so conclusion being, i ran 11.5 still with traction problems on prem unleaded, not at its maximum potential. :kick: