well to help reduce the pinging and still run the same timing i run a nulon octane booster it increases the octane by up to 7 points and it practically works. when i had it tuned on the dyno i even observed the run before the octane boost was added then the one after and all of the massive amounts of ping were no more hope this helps the bottle is like 22 bucks at supercheap auto and like 27 elsewhere so good luck and try it but make sure that you get the pro strength booster and not the boost and clean
cheers kurt
also this thread is a champion idea