[jakobnev]

Just a couple things i thought of while reading your post:

1. Feathering the throttle is a typical rookie mistake, it's the brake pedal you need to learn to avoid. (There are threads about how to accelerate).

2. Unless you have a misfire, boosting the ignition system isn't going to give meaningful improvement. (That includes exotic plugs)

3. Increased tire pressure should be on your list, it's cheap, easy, and effective.

And welcome.