from touring car to f1

Another option is Kyosho KF01 nitro F1.   Though not necessary faster than brushless motor, but overall feel... engine sound, gas smell, smoke and mechanical braking...could be even more 'F1' than F104x...

Agreed that F1 is very attractive, my rc history is 4wd touring -> F104 -> KF01 (nitro F1) -> 1:8 Nitro buggy (off-road nitro F1 in my point of view hehe)

Yes F1 is very sensitive in setting, may be because not much items to set as 4wd car.  I swapped my KF01 rear tire to F104 making F104 a more controllable than before.

Tuning F1 vs 4wd just like calibrating sniper vs machine gun in this sense.