Originally posted by kevinlowl
I think what they meant by adding more than one turbo or twin turbo, is really just installing a turbo from a car with twin turbos in real life like the R34 Skyline GT-R because as far as I know, there's only one specific location for enabling turbos and I doubt you can enable more than one.
As for turbocharging and supercharging, I think all they did was just installed a turbocharger and a supercharger to the same car and then ended up with both.
Don't quote me on it though, better wait for a professional to come in and clear it up.
I thank you for the help, but SnoopDenver had more relevant info for what I wanted.