I hope that this answers your question.what exactly is knock or ping?
without f/inj, it is more important to find the right fuel for your bike. If you are running a touch lean, or ride a lot at high (5-8k) altitudes, you would find that a premium fuel might be better. If you are a touch rich then a faster burning gas would be to your advantage.Good info. I have always used high octane in my bike though. The biggest piece of information that got is..."Almost all of today’s new cars have FUEL-INJECTED engines that need to use gasoline with a detergent additive. They do not necessarily need high octane gasoline with a detergent additive." I know I don't have fuel-injection in my bike, so I don't know if that makes any difference. I'm interested in any feedback about the difference.