Must have
Simple and save a lot of time for me
Must have
App very accurate on track, its not just a guide!
Good
Easy to use and very accurate. Reduce lap time 0.6 seconds
Good
Power feels great with base setups for my weather and location.

Optimize your kart's engine performance with precise carburetor and spark plug recommendations. This app uses real-time weather data and engine specifics to provide optimal settings for Briggs & Stratton World Formula engines.
1.9
January 23, 2025
• Added new feature: get weather (temperature, pressure, humidity) via Bluetooth using weather stations: Kestrel DROP, Kestrel 5x00, WeatherFlow WEATHERmeter, Skywatch BL • Added new feature: added the ability to calibrate the barometer built into your phone or tablet (go to the “Settings“ tab, then “Measurement units“) • Added new feature: added various utilities (unit converters) (go to the “Settings“ tab, then “Utils“) • New fuels have been added: VP Racing U4.4, VP Racing MR12, VP Racing T4, Sunoco 260 GT Plus • We have improved our weather calculator significantly. Now you can manually select which type of atmospheric pressure you are working with (for example if you use portable barometers, weather stations): - sea level pressure QNH - sea level pressure QFF - station pressure (barometric pressure) • On the results tab, click on the drop-down menu 'Weather (AirLab)', new data for tuners are available: Air Density, Relative Air Density, Density Altitude, Station Pressure, SAE - Dyno Correction Factor, SAE - Relative Horsepower, Volumetric Content Of Oxygen, Oxygen Pressure • Improved functionality for the feature 'Weather for custom location'. We added a search bar where you can enter the location name. Search places easier and faster now • We added new fuels, this is gasoline with ethanol. It require a richer carburation than regular premium gasoline • Improved functionality and accuracy of fuel calculator • Bug fixes for 'share setup with friends' feature • Fixes for showing 'Carburetor icing alert', now it doesn't overlap other content • We reworked the altitude determination algorithm for the 'weather for custom location' feature. We hope that now, if you manually selected your location, the altitude will be calculated with much greater accuracy • We added the ability to leave text notes for each history in 'History' tab. To do this, open any History, enter edit mode and add a note • Now you can manually select the translation language. Application contains many special terms and sometimes translations that we offer are not always good. We are sorry. Now, if your phone (for example) in German, but you are unhappy with the translation you can switch to English (for example) only in this app (you don't have to change locale of device). You can find this feature on 'Engine' tab at the very bottom
MoreJetting for World Formula Kart is a paid application designed to help users optimize carburetor and spark plug settings for Briggs & Stratton World Formula karting engines. It uses weather data and engine configurations to provide precise recommendations.
The app can automatically obtain weather data from the nearest weather station using GPS and internet connectivity. Alternatively, users can manually input temperature, altitude, humidity, and atmospheric pressure if internet or GPS is unavailable.
It provides recommendations for main jet, needle type, needle position, pilot jet, mixture screw position, spark plug, spark plug gap, and float height. It also allows for fine-tuning these values.
Yes, the application supports selectable fuel types, including gasoline with or without ethanol, and various racing fuels like VP C12, VP 110, and VP MRX02. It also features an adjustable fuel/oil ratio and a mix wizard.
No, this application is ad-free. It is a paid application that does not display advertisements to users.
Jetting for World Formula Kart is available for iPhone, iPad, and iPod devices. It requires iOS 11.0 or later.
The application was last updated on January 23, 2025, with version 1.9. This indicates a commitment to regular updates and improvements.
Jetting for World Formula Kart is priced at $7.99. This is a one-time purchase for the application.