So, we all know most of the fuel in Canada is terrible. So what do you guys do to counter this?

I have tried using only the highest grade of fuel (94 chevron or 92 shell) and dropping a can of the octane booster every time, but my car still is running like crap.

Now some history from my car. Itís bran new and tuned to 92 octane. But Iím guessing itís US 92 itís tuned for, not Canadian 92.