COMBO PPE Stainless LONG TUBE MAX TORQUE Header and Midpipe with Resonator and Converter 2016-2018
"Horsepower sells cars, torque wins races." This famous quote was originated by Enzo Ferrari, and repeated later by Carroll Shelby. The reason is quite simple, it is torque that helps you leap out of tight turns, away from stop lights, etc. In autocross and track events any torque advantage exiting slowest corners of the course gives you a speed advantage you carry to the end of each section. With that in mind, the broadest torque curve you can get, with the strongest midrange punch, is always going to be a 4-2-1 design longtube header that puts emphasis on broadest TORQUE possible. That's torque you can use every day pulling from stoplights, and for victory on race weekends.
Hand made merge section long tube race header constructed by a header specialist.
Note for now we only can confirm fitment on MANUAL TRANSMISSIONS, 2.0, USA Left Hand Drive! Does NOT fit RHD.
Why 4-2-1 layout? For the FIRST TIME Mazda included a 4-2-1 layout factory header in the ND Generation Miata and the reason they did it was to make fat midrange TORQUE that makes the ND so quick. Many magazines get 0-60 in stock form at about 6 seconds flat, or even a hair under, which is obviously about the ND Miata's broad torque curve and NOT about the mere 155 peak hp rating at the motor. We tested ND headers in both 4-1 layout as we have done in the past on NC generation Miata, and 4-2-1 layout and quickly understood Mazda thinking...this motor is about TORQUE, and this motor wants a 4-2-1 layout to maximize what this Skyactiv motor is designed to do. We tested the Cup Car longtube header and then beat it with our shorty 4-2-1 before we started work on this longtube to make even more area under the curve than any other header on the market.
Thus, first thing to know about the Skyactiv 2.0 motor is that a properly designed longtube highflow 4-2-1 makes the midrange as beefy as you can get it (see our forum a picture of the crazy Mazda3 factory longtube 4-2-1 used on this same 2.0 motor to maximize torque in that heavier car application of the same Skyactiv Motor). Sadly, most folks only think Horsepower and do not understand TORQUE is what you actually feel pushing you back in the seat, and maxing area under the TORQUE curve of the ND makes the ND the fastest you can make it short of adding boost.
Note the first converter in the factory header is removed with install of any performance header on ND and that will raise the exhaust sound level.
Factory first O2 sensor is in the OEM header and stays in our header without use of extension cords. Factory second sensor in the midpipe should be moved after the factory midpipe converter to avoid an engine code (our special length midpipe included in this combo provides bung in that location for this reason). That second sensor reaches its new location without use of extension cords. Bottom line is full plug and play install install...but we strongly suggest our Orange Virus as critical to getting maximum torque results in a safe manner.
The software is primitive at this time, making this a difficult choice for most to tune. The advantages of a longtube include much more ability to push the tune, particularly when the car is hot (race conditions), but that also means it takes a LOT more tune work with current software to get the value of the longtube setup. Thus, this is NOT a setup we recommend to average folks, it's really for the Racers, Pros, Pro Shops, and others similarly willing to work with the Tuner dyno session after dyno session to chase every point of horsepower and torque at every point of the curve for maximum area gain under the curve. Most folks should just get our shorty header which gets great peak hp gains easily, results most folks and most Tuners can easily replicate. If you do not have the patience for the extensive Tune work, please save your money and get our shorty 4-2-1 header and leave this choice to the Hardcore.
CARB NOTICE: Installing this header in the 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).
INSTRUCTIONS....see "Header Installation" thread in our forum in the Instructions Section for copy on page 7 of that thread of factory service manual header install (torque specs in that pic). Otherwise very simple except much easier with two people. Note the flex joint at midpipe outlet is actually jointed inside such that with some force you can make it 'click' through a range of positions it will then hold, we did this to fit wide range of mufflers.
The integrated midpipe is made of 304 stainless steel and has a 400 cell per inch magnaflow 5" round catalytic converter and uses a 409 stainless shell. The header and midpipe combo will bolt to your stock or aftermarket muffler.
WARRANTY: This is made for the Racers first and foremost. With that thought in mind, and with the expectation that this item will see MUCH more abuse than our other systems, this system does not carry the lifetime warranty of our other RoadsterSport brand choices. But we do include a standard 12 month warranty on this item that includes shipping both ways. Coverage on the midpipe converter is referred to Magnaflow for warranty. Magnaflow converter warranty: Federal cats warranty: Internal (converter substrate): 2 Years 25,000 Miles. External (converter housing assembly): 5 Years and 50,000 Miles.