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Article from Aviation Consumer Magazine August 2019 Perhaps the most desirable mod for a 231 that makes it more like a 252 is an intercooler. One system— the Turboplus—has been highly recommended by M20K owners and it comes from Turboplus Aircraft Systems in Gig Harbor, Washington. Turboplus says it was the first company to bring intercooling for GA singles and twins in the early 1980s and there are thousands of Turboplus intercoolers and induction systems in use today. The company says its M20K intercooler kit can yield a max speed of 241 MPH at 24,000 feet, and 170 knots true airspeed at 10,000 feet and 65 percent power, with the added benefit of lower cylinder head temperatures. The STC’d kit for the Mooney M20K is $5995 and the estimated installation labor is around 18 hours. “My conclusion is that the Turboplus intercooler provides much improved intake manifold cooling and an increase of 3 inches in available manifold pressure at altitudes above the 13,500-foot critical altitude, while providing significant performance benefits across the board to the hot-running, non-intercooled engine in the 231 M20K,” reader Geoff Lee said of the system. He’s documented the installation in a well-written tech guide that’s available at themooneyflyer.com/issues/2019-MayTMF.pdf . That’s a link to The Mooney Flyer www.themooneyflyer.com , the official magazine of the Mooney community.

Are you interested in the only FAA-PMA APPROVED intercooler system for your M20K? Turboplus Aircraft Systems manufactures the highest quality intercooler, with hands-on craftsmanship in every part. Enjoy the added benefits with a Turboplus intercooler installation. Our intercooler gauge allows for temperature readings throughout your entire flight. Please take a moment and visit our website Contact Page, then request a Quote Sheet for guaranteed special pricing. We've cut the intercooler installation time down to 1.5 days. Visit: www.Turboplus.com Click on "Intercooler Kits" and the drop down menu will direct you to the page of your choosing. Jeff Shapiro Turboplus Aircraft Systems, Inc. Gig Harbor WA 98335