The Miata enthusiast has been introduced to several new supercharger systems over the past couple of years. Vortech, Twin Screws, Roots, Whipple, Centrifugal, Coldside, Hot-side . . . it's just enough to spin your head.

No longer is there just one "major" Miata supercharger with limited boost levels. Finally there are several different systems to choose from. It is about time that someone has offered Miata owners a supercharger system to rival the turbo systems that have been available for many years.

But it can get vary confusing deciding on what is the best supercharger system to meet your goals and budget. At Track Dog Racing™ we've waded through a lot of this information and have selected as our supercharger supplier of choice.

The Roots-Style Supercharger offers heart-stopping acceleration and throttle response, and pulls hard all the way up through the RPM range. This supercharger gives you more power as soon as you hit the throttle. These are the same patented design Eaton uses for OEM manufacturers such as Ford, Pontiac, Buick and Mercedes and is smog legal in all 50 states. The vacuum bypass system remains closed when you need the power. When you are simply cruising, the bypass opens to reduce the load on the supercharger. The transition is smooth and seamless.

The Jackson Racing Supercharger is maintenance-free and backed by a 2-year, 100,000 mile limited warranty. These products are extensively road and dyno tested By TDR.

TDR's expertise is high-performance supercharger systems that are suitable for the race track and heavy-duty street usage. We've put together high-performance systems for our customers and we can help you optimize your existing system. We also sell and install stock supercharger kits for customers that want to keep things simple.

We not only design and manufacture products. We are your one stop source for all your supercharger and performance needs.

The Internet is abuzz with many wild claims of supercharger power ratings. At TDR we've been working for more than three years finding the limits of supercharging stock Miatas. Unlike some of the other vendors, all our dyno runs are available for our customers to review. There are no "fuzzy" dyno charts or outrageous claims from un-streetable setups to confuse you.

That's why TDR's motto is "NO HOT AIR."

It's something we believe in strongly and we want to help our customer's achieve "real power. . .for the real world". We've logged tens of thousands of miles on our test cars, both on the street and track. We're continually testing our product line so you don't have to find out what doesn't work. We only sell products that are proven winners.

Contact us today and we'll help put together the right system for your budget and goals.

We discovered, through trial and error, that the upper power level for the stock '94-00 Miata motor is around 225 rear wheel horsepower (RWHP). The 2001 and newer models use higher compression, which limits boost levels and maximum horse power, so they will have a safe upper level of 210 RWHP.

Although the factory cast iron block and forged crank are excellent for high horsepower, the connecting rods and cast pistons will limit the power potential beyond the maximum recommend boost levels.

The blue line on the chart shows us that the maximum recommended boost level for a '99-00 stock Miata engine, which has a compression ratio of 9.5 to 1, should be around 12 psi. The red line on the chart shows that the '01-'04 stock Miata engine, which has higher compression (10 to 1 CR), has a recommend maximum boost of 11psi. While the '94-97 Miata has a lower compression of 9:1 and can safely handle 13.5 psi. This is based on using the TDR Air-to-Air intercooler at an efficiency rate of 85%.

Higher boost levels beyond the recommended range can cause piston and rod failure and even the destruction of the engine block. If you are considering higher boost levels contact us for recommendations on engine upgrades.

Note: The above chart is based on information borrowed from Corky Bell's excellent book titled "SUPERCHARGED". We highly recommend this book for anyone who wants to learn more about superchargers. It is available at www.amazon.com

Most people feel the same way and don't want the expensive of building a beefed up engine. But you can still get impressive results while staying within the limits of a stock motor. Just know the limits of the stock engine and stay slightly under them.

We have customers with stock engines and the MP62 Stage 3 that are dynoing at the 210-225 RWHP level. These cars have been virtually problem free over the past year while running at these power levels. Whether it's a daily commute, spirited back road driving, lapping sessions at the local 1.7 mile road course, or embarrassing V-8s from the stoplights, these supercharged Miatas have proven that the MP62 using the TDR Air/Air Intercooler are reliable choices for Miata owners.

Adding power to a stock engine can be an expensive proposition. Determining your desired power level you want to attain is the first step to selecting your system. We also are believers in leaving room for upgrading.

Please give us a call and we can put together an estimate to meet your power goals and budget.