Jetting Max Kart for Rotax Max
Carburation pour Rotax Max
Jetting Max Kart for Rotax Max is #78 in Sports Paid in France and charting in 1 of 16 countries we track.
DeveloperISEnet
CategorySports
Price8.99 EUR
Released
Rating★ 5.0 (1)
Version2.1
Age rating4+
First charted🇫🇷 24 Sep 2026
Where it ranks now
Every top chart it appears in across 16 countries.
| Country | Chart | Rank |
|---|---|---|
| 🇫🇷 France | Sports · Paid | #78 |
Members see more
Sign inEstimated downloads and revenue, ratings momentum, rank history, recent reviews per country and breakout scores for Jetting Max Kart for Rotax Max.
About Jetting Max Kart for Rotax Max
This app recommends the main jet, needle position and spark plug for karts with pre-2015 Rotax Max engines —Micromax, Micromax without carb restrictor, Minimax, Junior, Senior, DD2 and Supermax— from the weather conditions and your engine setup.
The conditions can be pulled from the nearest public weather station using your location, or typed in by hand: with no signal the app works exactly the same.
FOUR SCREENS
- Results: the recommended jet in large type, with the exact calculated value and the two jets it falls between, in green when the choice is clear and in amber when it sits halfway. Also the needle position, the spark plug, the air density, the density altitude and the relative horsepower. Fine tuning works in steps of 0.1 and tells you what each step achieves.
- Conditions: temperature, pressure, altitude and humidity, each with its own unit. When you pull them from the station you see which one answered, how far away it is and when the reading was taken, with a warning if it is more than 30 minutes old.
- Engine: class, K27 or K98 needle, 3.6 or 5.2 gr floats and pilot jet, float height, spark plug brand, 12.5 or 8.5 venturi, airbox, oil percentage and track type.
- Track logbook: every session with the circuit —picked from a catalogue of 112, with its altitude—, the conditions, what the app recommended against what you actually fitted, how it ran at the bottom, middle and top, the laps and the best time. Exports to CSV.
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- Auto calibration: once the logbook has enough sessions, the app spots whether your engine systematically asks for more or less than the recommendation, and offers to set it as your default fine tuning.
- Mixture calculator: tell it the petrol and the oil you pour and it gives you the percentage, or the other way round. One button carries that ratio to the engine screen.
- Share the setup as an image, to send it to the team group.
- Dark mode, system text size, VoiceOver, rotation and iPad.
UNITS
ºC and ºF; metres and feet; mb, hPa, mmHg and inHg; kg/m³, lb/ft³ and lb/gal.
PRIVACY
The app uses no trackers and collects no personal data. If you use location, the coordinates are sent only to look up the nearest weather station.
Available in Catalan, English, French, German, Italian, Portuguese, Russian and Spanish.
This app is NOT VALID for Rotax Max EVO engines, from 2015 onwards. For those engines you need Jetting for Rotax Max EVO Kart.
The conditions can be pulled from the nearest public weather station using your location, or typed in by hand: with no signal the app works exactly the same.
FOUR SCREENS
- Results: the recommended jet in large type, with the exact calculated value and the two jets it falls between, in green when the choice is clear and in amber when it sits halfway. Also the needle position, the spark plug, the air density, the density altitude and the relative horsepower. Fine tuning works in steps of 0.1 and tells you what each step achieves.
- Conditions: temperature, pressure, altitude and humidity, each with its own unit. When you pull them from the station you see which one answered, how far away it is and when the reading was taken, with a warning if it is more than 30 minutes old.
- Engine: class, K27 or K98 needle, 3.6 or 5.2 gr floats and pilot jet, float height, spark plug brand, 12.5 or 8.5 venturi, airbox, oil percentage and track type.
- Track logbook: every session with the circuit —picked from a catalogue of 112, with its altitude—, the conditions, what the app recommended against what you actually fitted, how it ran at the bottom, middle and top, the laps and the best time. Exports to CSV.
MORE
- Auto calibration: once the logbook has enough sessions, the app spots whether your engine systematically asks for more or less than the recommendation, and offers to set it as your default fine tuning.
- Mixture calculator: tell it the petrol and the oil you pour and it gives you the percentage, or the other way round. One button carries that ratio to the engine screen.
- Share the setup as an image, to send it to the team group.
- Dark mode, system text size, VoiceOver, rotation and iPad.
UNITS
ºC and ºF; metres and feet; mb, hPa, mmHg and inHg; kg/m³, lb/ft³ and lb/gal.
PRIVACY
The app uses no trackers and collects no personal data. If you use location, the coordinates are sent only to look up the nearest weather station.
Available in Catalan, English, French, German, Italian, Portuguese, Russian and Spanish.
This app is NOT VALID for Rotax Max EVO engines, from 2015 onwards. For those engines you need Jetting for Rotax Max EVO Kart.
Latest updates
2.1
The mixture calculator.
• A petrol and oil mixture calculator, on the engine screen and right below the ratio control. You pick which of the three you want to know —the oil, the petrol or the ratio— and set the other two: the app works out the one that is missing.
• Petrol and oil each carry their own independent unit: litres, millilitres, US and imperial gallons, US and imperial ounces. Changing the unit does not change the mixture.
• The ratio is shown as a percentage and as 1:n at the same time, because they are the same number seen from the other side: 4 % is 1:25. And the percentage is oil against petrol, not against the total mixture: at 4 %, five litres of petrol take 200 ml of oil.
• The minus and plus jump to the next round figure, so you can land on an exact value without fighting the slider.
• One button carries that ratio to the engine screen, which is where it enters the jetting calculation. If it falls outside the range the app calculates in, it tells you before changing anything.
• New icon: the same kart as always, with more contrast and without the empty fifth of white it had on top.
• The calculator has its own help, in all eight languages of the app.
The calculation model is unchanged: for the same conditions and the same setup, the recommended values are exactly those of the previous version.
