Good-Win Racing RoadsterSport MAX TORQUE Standard Length MX5 Miata Stainless Header 2016-2022

It was believed to be said originally by Enzo Ferrari, and repeated later by Carroll Shelby, that Horsepower sells cars, torque wins races. The reason is quite simple, TORQUE is what helps you leap out of tight turns and pushes you away from stoplights, etc. In autocross and track events any advantage at the start of the slower sections is advantage you carry to the end of each section, and torque is what you actually feel pushing you back in the seat. With that in mind, our headers here use a 4-2-1 layout which puts less emphasis on peak hp at top of rpms that you rarely use, and more emphasis on max low and mid range TORQUE that you can use every day, and for victory on race weekends. With the new generation Miata the factory went 4-2-1 on header layout for the first time, this is a much higher flowing version of the same 4-2-1 layout to give you the biggest torque curve possible in a standard length header.

MX-5 Miata Street Header features:

• 4-2-1 is a much higher flowing version of the same 4-2-1 layout to give you the biggest torque curve possible in a standard length header.

• *Limited Edition Ceramic Coated. Our regular version is polished stainless, which will bronze and blue in response to the heat of use. As a result, got some requests to do bright silver ceramic coating over the polished stainless, which improves long term appearance and performance (about 3% better dyno results with the ceramic coating). Fits both LHD and RHD, manual and automatic

• CARB NOTICE: Not CARB approved (and therefore legal in California for off road use only). Note that there are states in addition to California that now follow the California model and require CARB compliance, please check the rules of your state before ordering, in some states this setup is legal only for race cars and may never be used on public highway. Sorry, we will not ship these to residents of California.

• Bolt-in design for MANUAL and AUTOMATIC TRANSMISSION 

• Saves over 4 lbs compared to the factory header.
  Stock header weight: 13.15 lbs
  Max Torque header weight: 9.05 lbs!

PICTURE OF FACTORY MX5 HEADER RIGHT, Note the pinch point where the factory header suffers the primaries pinched in half, circled in red at right. That pinch point chokes the power the Miata 2.0 motor can otherwise make. The Roadstersport Street MX5 Header eliminates that pinch point, extends the primary length to max torque gains, while retaining a high efficiency converter.

GOOD-WIN's APPLICATION NOTES: They pushed the converter as far down against the lower flange as possible to maximize the length of our primaries to maximize the torque gains. Dyno Below shows results of configuration they expect most customers will run (RoadsterSport Street Header with Roadstersport Q midpipe and Roadstersport Q muffler). Low line best results with stock intake and stock exhaust, high line is results with this Roadstersport Street Header, Roadstersport Midpipe and Roadstersport Q exhaust (still stock intake). They expect many will leave factory midpipe in place and use this header with our RoadsterSport Q Muffler on the end (factory midpipe just a little smaller in diameter and they expect that keeping the factory midpipe would give similar results through the low and mid range and give up just a bit toward the high RPM range).

Notice O2 Bung BEFORE and AFTER Converter so you can keep your factory O2 Sensors inline and prevent engine codes. You can use the extension cords linked below, or you can release some O2 wire length from factory harness bracket to make the install without the extension cords (just follow the O2 cords back until you reach that bracket and this will become obvious).

Notice in dyno that the gains in torque are strongest at the low rpm range but extend through the mid range and all the way to redline, that's a torque improvement you can feel every time you pull away from a stop and every time you grab a higher gear! These are dyno results without doing a tune, adding a Tune would add even more to your results.