My observations
If the car has the option for supercharging or NA tuning I check to see what the final HP is between the 2 if they are within 100 HP I go with the Super charger. Stage 3 NA tuning yields more then 100 HP then I go with that. Stage 1 and 2 turbos kill NA tuning, Stage 3 it's Iffy Stage 4 is for tracks where there are extremely long straights. If the car has access to to stage 5 turbos, well that kills all other engine types. To bad you can't do what you can in real life and have both a supercharger and a turbocharger.
Some cars can take turbos but are immune to lag. The Camero LM can have a stage 4 turbo with 900+ HP yet there is absolutely 0 turbo lag.
If the car has the option for supercharging or NA tuning I check to see what the final HP is between the 2 if they are within 100 HP I go with the Super charger. Stage 3 NA tuning yields more then 100 HP then I go with that. Stage 1 and 2 turbos kill NA tuning, Stage 3 it's Iffy Stage 4 is for tracks where there are extremely long straights. If the car has access to to stage 5 turbos, well that kills all other engine types. To bad you can't do what you can in real life and have both a supercharger and a turbocharger.
Some cars can take turbos but are immune to lag. The Camero LM can have a stage 4 turbo with 900+ HP yet there is absolutely 0 turbo lag.