10psi on Caltex thats all i will run Champ
And it runs beautiful
15psi on bp98 however, makes the car ping running the standard 15degrees timing even in the cool!
Adam, My car was tuned at 2pm 30degrees with 296, so in theory, i have more, as a daily driver!
The octane additive was put in as an additive just in case it was pinging and i beleive it helped
Dont for get you used octane as well on wed night mr and that would of only been for a better time so you bit yourself on the arse my friend :lol: