The MX-5 is a sports car. So it should sound like one! Our new exhaust system gives the MX-5 some needed purr. It's not obnoxious, it's just right. We went to a larger muffler than found on other systems to get the perfect sound. It's also 4 lbs lighter than stock. The double-walled tips are 3.5" in diameter - that's 1/2" larger than stock, just enough to give a little attitude without looking ridiculous. This is our original muffler for the 2006 and later cars, back due to popular demand.
We've found that the MX-5 is extremely difficult to dyno consistently. Racing Beat has found the same thing. This prevents us from obtaining accurate before/after numbers. However, similar mufflers on the MX-5 claim around 8 hp at the wheels.
As with all of our other exhausts, it's made of stainless steel - even the flanges. In fact, it's so well made we can offer a lifetime warranty. Both of the tips are adjustable to give a perfect fit and the whole assembly is nicely polished. Includes gaskets, easy bolt-on installation.
We don't recommend this exhaust for supercharged cars, as it can get pretty loud and drone badly on the highway. We have a supercharger-specific exhaust that will cut the decibels without power loss.