MAC or Dynomax or Flowmaster

Originally Posted by Orange97GTVert

Flowmasters sound great on 5.0s, get the 40 series catback with the polished stainless steel tips. There is nothing better for just catback.

There are several aftermarket exhaust companies that make catback systems that make more power than the Flowmaster & IMO sound much better, and not as loud.

I recently ditched my 2 chamber Flowmasters for the DynoMax super turbo 2.5" catback ssystem. I have an offroad h-pipe so I opted for the DynoMax Super Turbo mufflers as opposed to the DynoMax Ultra Flos. The Super Turbos are much quieter than my old 2-chamber Flowmasters. I picked more power with the DynoMax system too. I haven't dynoed it but I picked up a little more than a tenth of a second in the quarter mile. If you have your catalytic converters in still I'd get the UltraFlos. If you have an offroad h-pipe I get the Super Turbos so that you can still hear yourself think.