# Jetting for World Formula Kart — max performance Walbro PZ 26 > Kart engine carburetor and spark plug optimization tool. (iPhone/iPad app by Ballistic Solutions LLC.) - Source: https://appshunter.io/ios/app/jetting-for-world-formula-kart/id1476545807 (this page in markdown: same URL + `.md`) - Developer: [Ballistic Solutions LLC](https://appshunter.io/developer/1611909747) - Category: Sports, Utilities - Price: $7.99 - Rating: 5.00/5 from 4 App Store ratings · 4 written reviews indexed - Age rating: 4+ - Requires: iOS 9.0 · 39 MB - Languages: American English, Arabic, Catalan, Croatian, Czech, Danish, Dutch, Finnish, French (France), German (Germany) and 22 more - Released: 2019-08-16 - Data updated: 2026-08-20 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/jetting-for-world-formula-kart/id1476545807/reviews.md ## What is Jetting for World Formula Kart? This app provides, using temperature, altitude, humidity, atmospheric pressure and your engine configuration, a recommendation about optimal carburetor configuration (JETTING) and spark plug to use for karts with Briggs & Stratton World Formula karting engines, which use a Walbro PZ 26 carburetor. This app can obtain automatically the position and altitude to get the temperature, pressure and humidity from the nearest weather station thought internet. Internal barometer is used on supported devices for better precision. Application can run without GPS, WiFi and internet, in this case user has to enter weather data manually. • For each carburetor configuration, the following values are given: main jet, needle type, needle position, pilot jet, mixture screw position, spark plug, spark plug gap, float height • Fine tuning for these values • History of all your carburetor configurations • Graphic display of fuel mix quality (Air/Flow Ratio or Lambda) • Selectable fuel type (gasoline with or without ethanol, Racing fuels available, for example: VP C12, VP 110, VP MRX02) • Adjustable fuel/oil ratio • Mix wizard to get the perfect mix ratio (fuel calculator) • Carburetor ice warning • Possibility of use automatic weather data or a portable weather station • If you don't want to share your location, you can manually select any place in the world, the carburetor setups will be adapted for this place • let you use different measure units: ºC y ºF for temperatures, meter and feet for altitude, liters, ml, gallons, oz for fuel, and mb, hPa, mmHg, inHg atm for pressures The application contains four tabs, which are described next: • Results: In this tab main jet, needle type, needle position, pilot jet, mixture screw position, spark plug, spark plug gap, float height are shown. These data are calculated depending on the weather conditions and the engine configuration given in the next tabs. This tab lets do a fine tuning adjustment for all this values to adapt to the concrete engine. Besides this jetting information, the air density, density altitude, relative air density, SAE - dyno correction factor, station pressure, SAE- relative horsepower, volumetric content of oxygen, oxygen pressure are shown too. On this tab, you can also share your settings with your colleagues, or add settings to your favorites. You can also see in a graphic form the calculated ratio of air and fuel (lambda). • History: This tab contains the history of all carburetor configs. • Engine: You can configure in this screen the information about the engine, that is, engine model, year, spark manufacturer, fuel type, oil mix ratio. • Weather: In this tab, you can set the values for current temperature, pressure, altitude and humidity. Also this tab allows to use the GPS to get the current position and altitude, and connect to an external service (you can choose one weather data source from several possible) to get the weather conditions of the nearest weather station (temperature, pressure and humidity). In addition, this application can work with a pressure sensor built into the iPhone. You can see if it is available on your device and turn it on or off. Also, on this tab, you can manually select any place in the world, the carburetor setups will be adapted for this place. If you have any doubt about using this App, please, contact us. We answer every question, and we take care of all comments from our users to try to improve our software. We are also users of this application. ## Key features - Optimal carburetor configuration recommendations - Spark plug selection and gap settings - Automatic weather data acquisition - Manual weather data input - History of carburetor configurations - Graphic display of fuel mix quality - Selectable fuel types and oil ratios ## Recent user reviews (4 of 4) All indexed reviews: https://appshunter.io/ios/app/jetting-for-world-formula-kart/id1476545807/reviews.md ### 5/5 — Must have *2019-08-24* Simple and save a lot of time for me ### 5/5 — Must have *2019-08-20* App very accurate on track, its not just a guide! ### 5/5 — Good *2019-08-18* Easy to use and very accurate. Reduce lap time 0.6 seconds ### 5/5 — Good *2019-08-17* Power feels great with base setups for my weather and location. ## Frequently asked questions about Jetting for World Formula Kart ### What is Jetting for World Formula Kart? Jetting 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. ### How does Jetting for World Formula Kart get weather data? 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. ### What specific carburetor settings does Jetting for World Formula Kart provide? 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. ### Can I use different fuel types with Jetting for World Formula Kart? 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. ### Does Jetting for World Formula Kart have ads? No, this application is ad-free. It is a paid application that does not display advertisements to users. ### What devices is Jetting for World Formula Kart compatible with? Jetting for World Formula Kart is available for iPhone, iPad, and iPod devices. It requires iOS 11.0 or later. ### How often is Jetting for World Formula Kart updated? The application was last updated on January 23, 2025, with version 1.9. This indicates a commitment to regular updates and improvements. ### What is the price of Jetting for World Formula Kart? Jetting for World Formula Kart is priced at $7.99. This is a one-time purchase for the application. ## Version history (last 5 releases) ### 1.9 — 2025-01-23 • 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 ### 1.8 — 2021-11-02 • 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 ### 1.7 — 2021-10-29 • 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 ### 1.6 — 2021-10-24 • 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 ### 1.5 — 2020-12-15 • 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). 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User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-20.*