Several dyno runs by Miata owners have concluded that a normally aspirated Miata does not benefit from an aftermarket muffler in any way, other than to provide a more aggressive sound. Because of the Miata's low power, it was optimized as much as possible at the factory.
Several owners have purchased aftermarket intakes, headers and exhausts (this combination typically costs $700-1000), and yielded a total additional horsepower of 3-10hp.
Most noticeable gains are typically from replacing an old cat that has become fouled with age.
Chev LS6 T56
flow master
If your vehicle is not under warrenty, then it is best to shop around and get a few quotes.
I found www.mx5parts.co.uk to be the best for all mx5/miata parts, good price and excelent customer service.
Borla
The places to purchase Mazda Miata parts are many and varied. The best place to start would be Go Miata. Failing that a good option would be Auto Trader or the auto section of eBay.
you want to make a hole in a muffler or you want to patch one up. Make a hole you can use a drell patch a hole best use sheet metal and rivets then muffler puddy around that
The Magnaflow muffler has gained acclaim as one of the best available performance exhaust systems on the market. The Magnaflow muffler is made of a rust resistant steel built to endure years before needing to be replaced.
Muffler "repairs" are generally bogus at best. Aluminum tape? Falls apart quickly. Welding? Rarely works. Your best bet, for the sake of a long term repair and for the safety of you and your family, is to have the muffler replaced. You sure don't want any exhaust fumes leaking into the cabin.
I have a flowmaster, it sounds great I have a flowmaster, it sounds great
Borla S- Type Muffler is the best type of borla exhaust for a v4.
best route to go is contact your dealership with the VIN # of your car........!! a competant parts rep should be able to give you all the details .