Originally Posted by Cocopopz
G-tech can be good if calibrated properly, I have one my self. Running premium is good better if you have aftermarket a/f ratio adjustment. As for the cam gear should not need it if your cam is set correctly.
G-techs are very variable, don't trust them too much.
Running premium has little to do with A/F ratios, and much more to do with ignition timing.
I prefer the 98 octane fuels as they tend to be more refined and burn cleaner.
It certainly wouldn't be necessary to use it in a EA, however it wouldn't hurt either, and you may be able to advance your timing further.
And cam gears are needed as there is no other way to set the cam, so in almost all cases it is needed as it is pure luck if it is in the right spot.
You should always check the lift at TDC, or whichever other way the cam grinder has given you to dial the cam in