Ummmm, dont think changing your gas grade has anything to do with the bogging, its clearly relevent driver input.
The bogging is from not giving it enough gas as related to you rpms or vice versa, giving it gas but letting the clutch out to fast, youll just half to practice finding the correct amount of gas and how fast to let the clutch out.
The clutch is very sensitive and you have to let it out very slow and smooth.
Slow and smooth is the key with the gas and clutch. Once you master that you should have no problem, then you can move onto qwick and smooth! good luck, I had the same probem when I first got the car.
Practice practice practice
MY00 BRP RS coupe