Well I could hear it back when I was testing for my ignition map and I have modified slip-ons.OK. How do you all hear if it is pinging or not with the loud exhaust and tunes blaring?
I mix it up depending on riding conditions and location where I buy fuel when on a trip. If it is a mom and pop station without ethanol, I get 87 because I figure they sell more of that than 93. If I am droning down the interstate I run 87. My local station sells 93 no ethanol so I put that in the tank.
For me it is not a matter of money, but what is best for the bike.
It's not a matter of money for me either, but there's no sense to burn premium if not necessary to prevent pinging/knocking.For me it is not a matter of money, but what is best for the bike.
It's more than just compression. A heavily turbocharged 8:1 engine almost definitely needs higher octane fuel while some 13.5:1 engines (like my car) are tuned to run 87 just fine. Back in the day compression mattered; today there are just way too many variables going on.Its all about your comperssion ratio. 9.5 to 1 or less ...you pretty much should be running lower to mid range octane. Higher comp ratio machines need slower ignition high octane fuels.
Bubba,I used 97 octane for two years... I have started using the 87 and it runs better, no more idle problems, and gets better gas mileage. And no pinging... so far even on the 95 degree day we had two weeks ago.
Has anyone gone from 93 to 87 octane on the Voyager, and if so have you seen any difference in performance good or bad?