Ah nvm
You're running an LSV on a phearable chip? Yes run premium, it should tell you that on his site when you had the ecu done, or at least give you the option to choose and you should of chose the highest octane you can get.
Well then yeah, the GSR runs on premium so it will be looking for knock. You're pretty much running premium from now on.
behold the integ35 lol.