Join Date: Jul 2002
Location: Bucks County, PA
I don't have any proof, but I would be almost certain that the Dynomax catback easily outflows the Flowmaster kit.
I actually like the Dynomax kit for a simple bolt on car. I had it on my first bolt on '97 T-bird and the car ran great. I didn't want my T-bird to sound like a Mustang, I just wanted it to have some more power. Now, my car didn't exactly sound stock because the front part of the exhuast consisted of Kook's headers running into offroad 2.5" downtubes that went into a 2 to 1 Magnaflow resonator. My car ran mid 14's with the mentioned exhast, U/D pulleys, bigger MAF with K&N, and a chip. Stock gears, TC, and everything else. It's also hard to beat the price on the Dynomax kit.
FordFanatic's idea is a decent cheap setup that will help with sound and flow, but I would replace the stock exhaust tubing with something that flows a little better.
'97 T-bird LX - 4.6L
The weekend car I never drive
'06 Mustang GT