Tornado Alley Turbo

Tornado Alley Turbo, Inc. designs, manufactures and installs turbonormalizing systems for piston aircraft at its shop at 300 Airport Road in Ada, Oklahoma. Turbonormalizing, as the company explains it, converts a normally aspirated engine to turbocharged operation that holds the same 29 to 30 inches of manifold pressure available at sea level all the way up to 20,000 feet. The systems use the turbo GAMIjectors balanced fuel injection developed by General Aviation Modifications, Inc. (GAMI), which Tornado Alley Turbo says it has the exclusive right to use in turbonormalizing installations. The company describes its people as pilots, engineers and general aviation enthusiasts who developed the system in their own Bonanza.

Products

• Whirlwind III Bonanza: turbonormalizing package for Beechcraft Bonanzas with Continental IO-520 or IO-550 engines (models 35-C33A, 36, A36, E33A, F33A, G33, G36, S35, V35, V35A, V35B, A36TC and B36TC), with a 321 stainless steel exhaust, a Garrett turbocharger, the Rammer II with Scoop Duct intercooler and an alternate air door with ice detection
• Whirlwind TCP conversions for A36TC and B36TC models
• Cyclone Cessna 185 turbonormalizing system
• Cardinal Cruiser package for the Cessna 177, with a Hartzell Trailblazer propeller option
• Smart Turbo turbonormalizing system for the Cirrus SR22
• Four place built-in oxygen systems for Beechcraft Bonanzas and the Cirrus SR22
• Replacement parts and system upgrades through its online store at tatparts.com

The company's news page lists FAA STC approvals for an increased maximum gross take-off weight on turbonormalized Bonanzas, GAMISPEC 550 engines and fleet wide use of G100UL high octane avgas. Turbo components carry a 2 year, 250 hour warranty and exhaust and induction components a 4 year, 1,000 hour warranty, and new owners get ground and in-flight orientation with the installed system. The site also lists aircraft sales and operating guidance for turbonormalized IO-520 and IO-550 engines.

Cirrus

Tornado Alley Turbo makes and installs the Smart Turbo, its turbonormalizing system for the Cirrus SR22. The company says the aftermarket kit is essentially the same as the kit it supplied to Cirrus Design for installation on new SR22 aircraft, with a few minor changes, and that around 900 examples were flying after almost four years of production. A four place built-in oxygen system of its own design is approved under the same STC as an option. The site quotes sustained climb rates of 1,500 feet per minute to 25,000 feet, cruise above 210 KTAS at altitude and typical high power cruise fuel burn of 17.0 to 17.5 gallons per hour. Installation takes three to four weeks at Ada. Published prices on the Cirrus page: turbonormalizing system installation US$69,950, four place oxygen system US$14,995 and a Hartzell composite propeller exchange upgrade US$25,950, effective 14 October 2025; rates change; confirm with the company. The Bonanza page lists the Whirlwind III at US$74,950 installed, effective 16 July 2026.

Contact

Description from the company's website (October 2026). Not a Cirrus Aircraft authorized service center. Is this your company? Claim this page to add photos and keep your details up to date.