I'd love to get ahold of some 93-94 octane gas but I've never seen anything over 91 octane at any station anywhere near where I live in So. Cal. Is there a particular octane booster you can recommend as being safe and effective?
As I stated in a previous post, I just put a bottle of Techroline Fuel System Cleaner in with my last fill-up a couple of days ago. Is this stuff effective at all in removing carbon deposits? If not, what is?
Short of pulling the cylinder head off, how can I tell if I have any significant carbon build-up? Would a compression test show significantly higher readings if there's enough carbon to cause pinging?