That depends on how big the supercharger is. -it is 7.0 psi-
A supercharger is a group of products that add significant horsepower to your vehicle. Generally they are after market modifications, and can be very expensive depending on the type and impact the supercharger makes.
depending on the size of the supercharger.. 30% to 40%
69
Add a Turbocharger or Supercharger to the engine.
Add an aftermarket supercharger.
about 135 hp i have an 07 gt that has a roush stage 3 supercharger on it and i have about 410 to the wheels so about 455-460 hp.
65 - well over 300 depending on boost
add Turbo, Cool air intake, supercharger,etc...
One way to gain a significant amount of horsepower in the 3.8l is to add a supercharger. For example, the RIPP supercharger made for Wranglers with the 3.8l.
intake exhaust header kpro turbo supercharger
Depends on the brand but roughly around 425 to 550