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RoadsterSport MAX Exhaust Header for 06-15 MX5


Price: From $469.00 to $569.00
Manufacturer: Good-Win-Racing

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Goodwin Racing Logo RoadsterSport MAX
Exhaust Header

2006-2015 MX5 

Gorgeous! Nothing comes close to the famous RoadsterSport MAX Power Header! Look at those smooth curves! Notice you don't see 6 welded sections for each primary like so many lesser headers that are made from cut pieces of standard radius pipe and straights, instead ultra SMOOTH all mandrel bent tube is used here to keep flow as clean as possible. Sexy all T304 polished stainless steel is formed into equal length primaries for max power...with a lifetime warranty! RoadsterSport MAX Power for NC
Good-win puts incredible effort into making the exit at the collector as smooth and perfect as they can get it because this collection point is the KEY to good header flow and they had to make sure this was done as perfect as possible. Note they use the factory collector gasket....so the fit is as factory-like as possible.

The collector outlet is 2.5 inches. Curiously, the factory outlet is ALSO 2.5 inches and then the factory exhaust chokes down after that point. For best performance customers should match this header with the RoadsterSport midpipe and exhaust so they are running 2.5 inches of flow all the way...but this header will bolt in place of the factory header and connect perfectly to the factory midpipe. Note that this has no O2 sensor connection in the header....in part to keep flow as clean as possible but also because Good-win could see no purpose in locating them in the header since doing so will throw a code because pulling the factory header includes removal of the first catalytic converter.

TWO choices on what to do with the O2 sensors with this header. Choice ONE is buy the RoadsterSport midpipe which is designed to take both O2 sensors...and includes two O2 sensor connections...one before the midpipe's converter and one after the midpipe's converter to help avoid a code by simulating the factory installation before. Second choice is to have an O2 bung welded by your local muffler shop before and after the factory second converter in the factory midpipe to replicate the setup Good-win is doing with their midpipe. Both choices require extension of the O2 wires and WE HAVE THE OPTIONAL SHORT and LONG O2 EXTENSION CABLES ON THIS WEBSITE to make the install plug and play!
RoadsterSport MAX Power for NC

CARB NOTICE: Installing this header in the 2006 through 2015 MX5 Miata means removing the first catalytic converter which means this header will NEVER be a California street legal header, never be CARB approved (and therefore legal in California for off road use only).

GOOD-WIN'S APPLICATION NOTES: This is THE header for peak power on the NC with 2.0 liter motor. Our normally aspirated customers making the most power, and our supercharger customers making the most power, are all using this header. In the forums folks are proud to show off lesser headers that have 5 to 8 welded sections for each primary because the maker did it the cheap way with welding up standard straights and radius bits but while they are admiring the welds they overlook that each of those weld points means that inside the pipe you have a rough circle of material instead of smooth pipe! In contrast, you don't see welds on everry primary here because we do it right, smooth mandrel custom bend complete one piece primary sections give you the smoothest possible flow.

The first converter is also a pretty good resonator so understand that installation of any header will raise the exhaust sound level a good 20%. Therefore, we strongly recommend the RoadsterSport Q muffler with any header change because it was designed to handle the sound level of the header, and the RoadsterSport Helmholtz midpipe tunes the final sound result for drone free fun.

YES, fits Manual and Auto trans, both LHD and RHD. 




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