I have been thinking of getting getting a flowmaster muffler for my 2000 toyota 4runner sport with the trd supercharger. I have looked at the flowmaster super 40 and then the flowmaster 60 series. What I am looking for is increased power and acceleration. I also would like for it to not hurt my gas mileage.

I was wondering if anyone knew much about these and could offer me any ideas about them. People say it can add like 50 hp by putting these on. Does anyone know if this is true? I could probably get either of them for 85-100 dollars.

Does anyone have any other ideas on how to get more power, acceleration, etc for fairly cheap? Also, what other brands would u suggest if not flowmaster? Thanks alot.