You’ve got questions, we’ve got answers. We work with the Summit Racing tech department to help you tackle your auto-related conundrums. In this week’s Mailbag, we’re discussing two-chamber vs. three-chamber mufflers, and which produces the loudest exhaust notes.
Q: I have a 1989 Ford Mustang GT. The car has some upgrades like underdrive pulleys, ignition and coil, and a couple other things. The problem is, the car is too quiet. I have shorty headers, an H-pipe, and Dynomax Super Turbos. I want to use Flowmaster mufflers, but I don’t know whether to get the two-chamber or three-chamber. I have been told two-chamber mufflers are louder.
My friend has a carbureted Mustang 5.0 with two-chamber Flowmasters, and it isn’t as loud as another friend’s ’87 Mustang with three-chamber mufflers. Does carburetion or EFI have an effect on exhaust sound?
A: If lots of sound is what you want, go with the two-chamber Flowmasters. If the exhaust systems are equal, a car with the two-chamber mufflers will be louder than a car with three-chamber Flowmasters. The guy with the ’87 may have had bigger exhaust pipes, which will make the system louder. The type of induction system (carburetor or EFI) should not make a difference in exhaust sound quality.