Screenshots
Description
This app provides, for the current weather conditions and a given engine configuration (air filter type, pump type, etc.), a jetting recommendation for Stock Moto / Mod Moto shifter karts with Honda CR125 engines that have Keihin PWK 38 or PWM 38 carbs. In order to get the weather values, the application can use the location service (GPS or WiFi) to obtain the position and altitude, and the network connection to get the temperature, pressure and humidity from the nearest weather station. Nevertheless, the application can run without GPS, WiFi and internet connection, in this case, the user has to give the weather data. The application is made up of four tabs that are described next: - Results: in this tab, the recommended jetting is shown. It's calculated depending on the weather conditions and the engine and track configuration given in the next tabs. For the jetting setup, the following values are given: main jet, needle type and clip position and pilot jet. Under the recommended main jet, the calculated real value with decimals is shown. It assumes the usage of a #6 slide. Besides this jetting information, the air density and density altitude are shown too. In addition, this tab lets do a fine tunning adjustment for the main (high), needle (mid) and pilot (low) circuits for the jetting setup to adapt to the concrete engine. These values will be stored and used in the future sessions. - Weather: you can set the values for current temperature, pressure, altitude and humidity. The values of this screen can be manually set or can be loaded by the application reading the data from the nearest weather station (from the GPS tab). - Engine: you can set in this screen the information about the engine, that is, the class (Stock Moto or Mod Moto), the air filter type (clamp-on air filter, airbox with or without filter), the fuel feed system (pump-around, non pump-around), the oil mix ratio and the type of the circuit (spring or road racing, short or long). Depending of the track type, the jetting setup will be adapted. - GPS: This tab allows to use the location service (using GPS or WiFi) to get the current position and altitude, and connect to an external service to get the weather conditions of the nearest weather station (temperature, pressure and humidity). The app let you use different measure units: ºC y ºF for temperatures, meter and feet for altitude, and mb, hPa, mmHg, inHg y atm for pressures.
What's New
Minor adjustment in the calculation model after testing on the dynamometer.
Details
- Developer
- ISEnet
- Main Category
- Sports
- Version
- 1.5
- Version Release
- 2023-10-17
- Initial Release
- 2014-03-09
- Size
- 2 MB
- Age Rating
- 4+
- Price
- USD 7.99
- Languages
- AR, CS, DA, NL, EN, FI and 24 more
- Bundle ID
- com.ISEnet.JettingCR125ShifterKart
- Version Rating
- ★ 4.68 (22)
- First Seen
- 2026-07-13
Metadata updated 2026-07-13
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User Reviews
It seems to be a bit conservative but Great ap to have for a safe starting point.
Good basis app for starting points on jetting. All jetting is unique to conditions engines and areas but this app is very useful.
Gives good directional information. My motors run leaner than the recommendations in the app, but the changes driven by atmospheric conditions are very good.
Ignore the negative review. I see what he's doing. It's the corrected altitude which is what is used for jettting anyway. Will test and see how it works.
I've been using this app for a couple of months now. I tested it out at Phoenix and El Paso, TX. So far, the jetting parameters are spot on. They tend to run on the rich side, which is always ideal for these expensive engines. I do run them at 1.5 richer just to be on the safe side as competition is more about the driver not the engine out here in El Paso with the Border Karting Association
This app is good. But I just upgraded to a gravity feed fuel system. I do not know how this app is going to work out because it does not have the gfs on their applications.
This is a great product to give you a baseline to work from without the complex weather tools. Really helpful when weather changes too or when your kart has been in stored away for a few months. Great product for the price, much cheaper than a new top end.
Reviews are collected only for apps with detected changes (new entries or sharp risers).