Tag: muffler noise
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