andrewclark

I took my mufflers off and im not sure if i gained any horsepower. I obviously have better flow with less restrictions. So does that really give any gains?

2000GT4.6

Even the stock mufflers are not that restrictive. Usually even a full catback with bigger piping is only worth a few (3-5) RWHP at most.

Flyingmau5

i dont think it will be any significant gains maybe a few hp... take for instance an aftermarket catback, it's said to give you 20-25 more hp but in reality, it gives maybe less than half of the promised value.... :/

Flyingmau5

damn
2000gt4.6 u beat me to it