Good-Win Racing Mazda Performance Parts

RoadsterSport All Stainless Steel MX5 COMPLETE STREET EXHAUST COMBO...with CERAMIC Upgrade and NEW HELMHOLTZ MIDPIPE

2006-2015

RoadsterSport CERAMIC Coated Street Header, HELMHOLTZ Midpipe, and SUPER-Q Exhaust!

Miata MX5 2006-2015 · Exhaust


Part Number: 61-1262C

Application: 2006-2015

Reg. Price: $1,717.00

Sale Price: $1,699.00

Quantity:

RoadsterSport All Stainless Steel MX5 COMPLETE STREET EXHAUST COMBO...with CERAMIC Upgrade and NEW HELMHOLTZ MIDPIPE
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The complete exhaust combo profiled on our own PRHT SS Forum Project MX5 Miata!

Simple Bolt on for MANUAL TRANSMISSION ONLY, can be installed on Automatic but see our forum header install thread for details of what is required (cooling line re-route and modification of heat shield panel near midpipe install).

Includes our Made In America All Stainless Steel Lifetime Warranty
*Roadstersport CERAMIC COATED STREET Header
*RoadsterSport Helmholtz Midpipe
*RoadsterSport-SuperQ exhaust

See Extensive additional information in the product listings for each of these items elsewhere on our MX5 exhaust page, including dyno and video links, just short summaries below.

RoadsterSport STREET Header! The most torque you can buy in a catted MX5 Miata header! See our forum MX5 PRHT Project and Dyno thread for many more details on development history, pictures of prototypes, and dyno work. A great choice for street customers looking for an MX5 Miata header with converter that is 49 state legal!

MX5 Miata Street Header features:
-Longer, equal length runners
-High-flow 5" round, 200cpi Ceramic Core Catalytic Converter
-49 state legal cat (EPA and OBD2 compliant, but NOT CARB APPROVED for California, the Carsound 99659HM core is an EPA certified converter covering up-to 6.2L/6375 lbs so it easily handles the flow of our performance header while still delivering clean tailpipe emissions)
-Bolt-in design for MANUAL TRANSMISSION
-Bolts to RoadsterSport MX5 Midpipe...or stock MX5 midpipe. Also saves weight, factory header assembly is 15.2 pounds and this RoadsterSport MX5 Street Header with converter is just 11 pounds! Converter has two year warranty (normally aspirated cars only, not for a supercharged Miata!), the rest is all stainless steel and has a LIFETIME warranty, even the flanges!

Currently for Manual Transmission only (a professional can install on the automatic but it requires re-engineering the cooling line layout and modification to the bell housing). Also, sorry to our Australian customers but this fits Left Hand Drive only!

We have included a number of extra features into our MX5 Miata Street Header which we believe customers will appreciate. We CNC machine the main flange to match the factory unit, including the bolt hole flange area thicknesses so that we are precisely replicating the factory fit to the head in terms of thread depth and space, etc. INSTALL NOTE: We have not included the O2 extension cords because we find it pretty easy to release the O2 wires from the factory bracket to which they are attached (follow the O2 wires until you reach that bracket).

RoadsterSport Stainless Steel HELMHOLTZ Midpipe. All stainless steel construction for years of driving pleasure. This MX5 Miata midpipe is slightly larger diameter than stock at 2.5 inches all the way through. Uses high quality SPUN catalytic converter with metal core (despite presence of converter this unit is not CARB approved). Uses new Helmholtz resonator midpipe which kills the 'boomy' drone other systems allow BEFORE it reaches your muffler.

The header and midpipe are legal for offroad race use only in California, and not CARB approved at this time.

RoadsterSport "Super-Q" Stainless Steel Premium Adjustable Sound MX5 Miata Exhaust. Our Best! We make FIVE very different Miata exhaust choices for the 2006 and newer MX5 Miata, including the RoadsterSport RACE, RoadsterSport STREET Single, the RoadsterSport II Duals, the RoadsterSport Q, this super premium duals unit we affectionately call the RoadsterSport Super-Q. This attenuation chamber design unit is the most mild and mellow on an otherwise stock Miata...about 10 to 15% louder than stock...with a deep burble. This unit was designed for both improved flow performance AND the best sound absorbing ability possible. This premium MX5 muffler is the BEST choice for those who plan such additional mods as a supercharger or header change (which unleashes a massive amount of additional sound). By using smooth mandrel bent 2.5 inch tubing to redirect the flow for a side entrance to the muffler we engineered a sound wave attenuation first chamber to knock down volume level dramatically while maintaining a flow-through design. Our latest and best dyno results for the header change which are in our forum were obtained with this muffler....ALL THE FLOW, without the noise! Weight is 24 pounds.

INSTRUCTIONS:

MUFFLER installation hints and notes in our forum Installation Instruction Section! --- CLICK HERE TO READ MORE.

MIDPIPE installation hints and notes in our forum Installation Instruction Section! --- CLICK HERE TO READ MORE.

HEADER installation hints and notes in our forum Installation Instruction Section! --- CLICK HERE TO READ MORE.

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

BRIAN'S APPLICATION NOTES: Notice in picture of our catted RoadsterSport header that we 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 we expect most will run. Low line best results with stock intake and stock exhaust, high line is results with this Roadstersport Street Header, Roadstersport Midpipe and Roadstersport Super-Q exhaust. No tune done for any of these results, adding our MotoEast tune can often add even more.

We include O2 Bung BEFORE and AFTER Converter so you can keep your factory O2 Sensors inline and prevent engine codes. 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!

Visit our Forum for more details on development of this item and our 2012 PRHT Project Car

Hear our project car with this combo below.

Or visit our 2012 PRHT Project Car Blog.

INSTALL NOTES

Read full header and exhaust installation hints, and see PICTURES, and notes in our forum Installation Instruction Section! The first secret is LUBE your hangers well with dish soap so you can get flanges aligned properly, and torque the supplied hardware to NO MORE THAN 25-30 ft/lbs (using more torque will actually result in LESS seal because you will pucker the flange out at the middle).

A little on the science, we targeted 120-130 hertz range which is where most folks report uncomfortable 'drone' or 'boominess' and got a total of 48 decibel max drop right at the 125 hertz level...which is a MASSIVE reduction. Nonetheless, looking at broader range we get an average 20 decibel drop from 115 to 138 hertz with reasonable 8 decibel drop in the ranges of 95 to 115 and 138 to 180 hertz.

Video Sample:

Shot on our Project 2012 with our RoadsterSport Street Header, RoadsterSport Helmholtz Midpipe, RoadsterSport SuperQ Exhaust. In this first sample notice what you do NOT hear, I get on it briefly and then engine brake almost down to a stop and during that engine braking the system gets more and more quiet where normal systems would drone as you engine brake down through 3000 rpms to 2000 rpms.

Second Video Sample: Shot from the bumper this clip massively exaggerates the volume but notice again what you don't hear, lots or racy sound when on throttle but every time I close throttle it quickly gets quiet instead of drone like many systems.

And finally, a more complete driving video with the camera inside the car:

INTERNATIONAL SHIPPING NOTES: We only ship to USA and Canada but we do have dealers outside the USA. CUSTOMERS IN EUROPE CAN GET THESE IN EUROPE AT THIS LINK!

CUSTOMERS IN Australia CAN NOW GET THESE AT THIS LINK!

*** Product images may differ from actual product appearance ***

REVIEWS

Good morning Brian, I finally got a chance to put the exhaust on, great advice, it's just loud enough, solid product. I'm running without the baffles, sounds great in power band. Take care, you have all my future upgrade business.........regards.

-- John S.

Wow. That is really fast service on the shift knob. Thnx

-- Scott