You can expect about 5 to 7 hp from the pop charger, but you would be much better off going with a cai - cold air intake, a system like Cattman Performance sells ..It actually puts your filter in the fender and lets the engine breethe fresh ,colder , denser air from outside of the vehicle. and that = more hp .. now you car will suffer just a tad at the top end but the overall gain is awsome and the fact that you loose a little at the top end can easily be overlooked
