KartMAX PRO EVO vs Fox + Son Jetmax

The Nº1 jetting app for all Rotax MAX engines, EVO included. Get the right jet, needle clip position and spark plug for Senior, DD2, Junior, Mini and Micro MAX — in seconds, matched to the weather at your track. KartMAX PRO EVO is a must-have for teams, professionals, engine tuners and club racers. Thousands of drivers all over the world rely on it every race weekend, from club events to national and international championships. Set up your engine once. From then on, the app reads the weather conditions at the racetrack and recommends the jet, needle clip position and spark plug reference for your exact engine and carburetor configuration. COVERS EVERY MAX CLASS • DD2, Senior, Junior, Mini and Micro MAX • EVO and non EVO engines with MaxChallenge setup and other configurations TAKES EVERY DETAIL INTO ACCOUNT • Keep as many engine configurations as you want • Selectable K98 or K27 needle (non EVO) • 3.6 or 5.2 floats weight (non EVO) • Idle jet and idle emulsion tube (non EVO) • Selectable needle valve for non EVO DD2 • Selectable intake restrictor and carburetor spacer for Micro and Mini classes (non EVO) • Adjustable floats height (non EVO) • Independent delta adjustment for main jet and needle pin — calibrate your particular engine • Support for Denso, NGK and NGK-IX spark plugs • Selectable fuel octane • Adjustable fuel/oil ratio with a mix wizard for the perfect mix • Carburetor ice warning • Fine tuning • International configurations supported WEATHER, AUTOMATICALLY KartMAX PRO EVO obtains your position and altitude automatically and fetches temperature, pressure and humidity from the nearest weather station over the internet. On supported devices the internal barometer is used for extra precision. Need more accuracy? Connect the readings from your own portable weather station. LEARN AS YOU TUNE Built-in documentation, how-tos, video tutorials and official manuals. Wondering if it really works? Thousands of drivers use our software every weekend at national and international championships. Although most of them would rather keep it a secret ;) Questions? Contact us — we answer every message, we act on user feedback, and we race with KartMAX PRO EVO ourselves.

Precision jetting made easy — This app helps you calculate jetting for Rotax engines based on weather and altitude. Now every Rotax racer has access to the same jetting Fox + Son has used to power our engines to countless Rotax National wins and Grand Finals tickets. After many months of development and testing, we have successfully brought the same jetting algorithms we use on our dyno to a quick, easy-to-use app. We have also included all of our popular Rotax tuning tips that are found on our website, along with a handy interactive gear chart for your convenience. As we do with our website, we will continually update the app as we discover new tuning information. Anytime a new cylinder or part is introduced, all of the testing we do at the shop will flow directly to Jetmax. Jetmax will also calculate the relative horsepower for that atmospheric condition. The relative horsepower percentage is helpful information to have when selecting your gear ratio. In certain situations you can benefit from increasing your gear ratio when HP is low & decreasing your gear ratio when HP is high. Whether you're competing at the track or fine-tuning your kart for practice, Jetmax gives you accurate, reliable recommendations so you can focus on performance. Features: - Jetting calculator for Rotax engines - Calculates relative horsepower - Includes an interactive gearing chart Engineered by racers, for racers — Fox + Son Jetmax App delivers the tools you need to stay competitive on race day. *You must have a valid subscription in order to use this app.