Tag: horsepower gain

MagnaFlow muffler horsepower gain exhaust upgrade performance exhaust muffler noise

Does a MagnaFlow muffler increase horsepower? Real-world performance facts

A MagnaFlow muffler can add 5-10 horsepower by reducing exhaust backpressure, but real gains depend on your car’s setup. It’s best for sound and modest performance gains, not big power upgrades.

October 30 2025