I just bought a 2010 charger rt it already has a stock exhaust with flowmaster 44s on it but I plan on changing that up, wondering if it would be better to do a 2.5 in or a 3in exhaust?
Ok thank you!I don't know what your goal is, whether the flowmasters are too loud, too quiet, too rusty, or whatever. But unless you're going with other engine mods, I don't think I'd go with a 3" exhaust. On a stock 5.7, you'd be changing your exhaust velocity to the point where it begin to would shift your powerband. You might gain a little at the top end, but you'd likely take a hit at the low end, where you really need it on a two-ton Charger with a 5-speed.