Good-Win Racing Mazda Performance Parts

Skunk2 64mm Pro Series Miata Throttle Body Upgrade!

1999-2005

Miata 1990-2005 · Intakes


Part Number: 61-1164NB

Application: 1999-2005

Reg. Price: $324.99

Sale Price: $299.00

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Skunk2 64mm Pro Series Miata Throttle Body Upgrade!
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Sorry, this product is not available to residents of California.

Good-Win Racing is proud to introduce the Skunk2 64mm Pro Series Throttle Body for the Mazda miata in its exclusive, hard anodized finish. The Skunk2 64mm Pro Series miata Throttle Body is designed to be used with the OEM miata intake manifold for bolt-on horsepower and torque gains by maximizing engine airflow.

Skunk2 miata throttle bodies undergo an extensive design and testing process to produce a miata throttle body that doesn't just provide more flow but retains smooth drivability and OEM throttle characteristics. Each Pro Series Miata Throttle Body is designed using the latest CAE (Computer Aided Engineering) tools, which results in a unit that exceeds industry standards. Pro Series Miata Throttle Bodies are also CNC machined from forged, billet 6061-T6 aluminum and hard anodized for durability in Skunk2 signature finish. Pro Series Miata Throttle Bodies are also compatible with OEM Miata throttle cables, which simplifies installation. Each Skunk2 Pro Series Miata Throttle body also features sealed bearings for smooth operation and ultra-strong, upgraded shafts for ultimate durability. All necessary hardware and a new throttle body gasket are included for trouble-free installation.

A larger miata throttle body is key to producing additional power throughout the powerband on modified engines with increased airflow demands. The Skunk2 Pro Series Miata Throttle Body features a large 64mm bore, which results in significant horsepower gains throughout the powerband on heavily modified boosted and high RPM naturally aspirated applications.

Dyno Comments posted at Miata.net thread from Tester and CSP class racer Scott Fraser: "So Dyno results are in. (We did not bolt up a stock throttle body that day to back to back test but we have dyno results from every dyno the car has ever had. I did clean up the mating surface of the intake manifold to the throttle body to make it flow better for the larger throttle body (see previous pictures in miata.net thread show what was done.). Below 3200 rpms the engine lost a little hp and tq, from 3500-5000 it had a steeper curve, making more power and tq. At 5000 to rev limiter the car roughly gained 5-6 hp and 5-6 foot pounds of torque. We drove our car last weekend and throttle felt great. Now we need to focus on everything else."

SIZE NOTES: The stock throttle body is 55mm, but stock USA manifolds are about 59mm. The TB's 64mm opening has about 18% more cross sectional area than the OEM 59mm manifold opening and about 18% less cross sectional area than a typical 2.75" (70mm) Miata cold air intake pipe (such as our AEM Intakes). Thus, the TB's 64mm ID provides a nice even flow transition going from intake pipe (70mm), to TB (64mm), then to OEM miata intake manifold (59mm). The upgraded miata throttle body size of 64mm inner diameter works especially well with the less restrictive JDM flat top miata manifold (also 59mm opening).

NOT CARB APPROVED, CANNOT SHIP TO RESIDENTS OF CALIFORNIA.

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REVIEWS

I absolutely love my Roadster Sport headers, mid pipe and Q muffler. I have owned a lot of cars over the years and the quality of your product is truly exceptional. The ability to tune the Super Q is very much appreciated.

-- Tony G.

After reading many other positive reviews on both the GWR and Miata forums I finally decided to buy this product. My main concern for many months was whether or not I was up to the task of installing the header. But with the excellent instructions on Brian's forum as well as several Miata forum threads it turned out easier than I expected. After receiving notice that the header would arrive on a Friday afternoon, I began the disassembly process. After about 3 hours I had the stock manifold out. Later that afternoon the new catted header arrived right on schedule. And it is a thing of beauty. I opted for the stainless version. Installation on Saturday morning took another 3 hours, although I could have shaved some time off of that but I was actually enjoying the process of double checking torque values and cleaning up my engine compartment. I already have the GWR catted midpipe, so that connection was a snap. I put everything back together, reconnected my battery, and went for a drive. NO CODES! Nice throaty sound with my RSII muffler, and a significant boost in power and low/mid torque. Another happy camper here. I since have added a M-E tune and I feel I have realized all of the gains that Brian has achieved on his 2012 project Miata. I've put several hundred miles on my Miata since the install with zero problems. This is the car that Mazda should have built all along. Thanks Brian.

-- Ron P.

CA PROP 65 Warning