Version 2.3 • Apple Watch, widgets and Live Activity: your main jet for right now on your wrist, on the lock screen and in the Dynamic Island all through the track day. • Track mode: the reference jetting large and high contrast, to read it in full sun with your helmet on. And dark mode throughout the app. • Alerts when the weather changes enough to change the main jet or the needle, using the hourly forecast too. • Fuel: 98 E5, E10, E15, ethanol-free, CIK-FIA or race fuel, and the jetting is corrected for it. • Carburettor icing warning, using the criterion of civil aviation. • 144 tracks in 22 countries, and when you check the weather the app detects which one you are at. • Setups and logbook synced through iCloud, and your jetting shared with your mechanic as a link, a file or a QR code. • Location no longer shows an error right after you grant permission, and it works on iPads without GPS. IN EARLIER VERSIONS • 2.2: five Vortex ROK engines with the Dellorto VHSH 30: GP Junior, GP, SV, SVR and Shifter. • 2.1: fuel and oil mix calculator. • 2.0: run logbook, track database with altitudes, jetting as an image card, needle comparison, fine tuning, and the TM KZ-R2 and KZ-R3, Vortex VTZ, Modena KK3 and IAME Screamer 4.

Five Vortex ROK engines. ROK ENGINES The app now recommends jetting for the ROK engines fitted with the Dellorto VHSH 30: ROK GP Junior, ROK GP, ROK SV, ROK SVR and Shifter ROK. Needle, atomiser, idle diffuser and idle jet are the ones on their 2025 homologation form, which in ROK cannot be touched; the main jet and the clip position come from air density, the only two things the rules let you move. Three of the five are calibrated against track data. That makes 38 engines, up from 33. And the following, from the previous version, in case you are coming from 2.0: A fuel and oil mix calculator. FUEL MIX CALCULATOR It converts between gas, oil and ratio: you pick which of the three you want to know and set the other two with your finger. In litres, millilitres, gallons — US or imperial — or ounces, with the ratio as a percentage and as 1:n at the same time. One button leaves that ratio set on the engine screen, which is where it enters the jetting calculation. You open it from there, right below the oil mix. And the following, from the previous version, in case you are coming from 1.5.2: Logbook, track database, sharing and five new engines. LOGBOOK Save every session: what you fitted, what the app recommended, the number of laps, your best lap, the weather at that moment and your notes on how the engine behaved or what you had to change. Over time you get the record of the setups that worked best at each place. It can be exported to CSV. TRACKS 112 tracks from 21 countries with their altitude and coordinates. Search by name and the altitude goes straight into the setup, which is the figure that really moves it. SHARING Send a setup as a card over WhatsApp, email or whatever you use: your mechanic or your team mate can read it without having the app. NEW ENGINES • TM KZ-R2 and KZ-R3, from the 2023-2025 and 2026-2028 homologations. • Vortex VTZ. • Modena KK3. • IAME Screamer 4. Plus the IAME brand itself, which a bug kept out of the picker: its six engines can now be selected. From 17 to 33 engines in total. NEEDLE COMPARISON Overlays the profile of two Dellorto needles and shows, at every height, how much passage area one gains or loses against the other. So you can tell which one runs richer, and where in the throttle range. FINE TUNING Corrects the recommendation on high, mid and low when your engine asks for more or less fuel than expected. Remembered per engine. MODENA All five recalibrated: KK1, KK1R, MKZ, KK2 and KK3 now step apart from each other instead of asking for practically the same setup. ALSO • Search in the available parts: type "U1" and tick the whole family at once. • The help screens read better: proper lists and black text. FIXES • The main screen showed "nan" for setups saved with earlier versions. Fixed, and the ones left broken now repair themselves. • Settings closed itself when opening Available setups, Units and Appearance. • The fine tuning label overlapped its value. • The GPS weather station works again: it was never asking for location permission. • GPS and weather error messages were not being shown at all. Now they are. • Links to our other apps pointed at a retired domain and did not open. • Launch screen adapted to current iPhones.

A fuel and oil mix calculator. FUEL MIX CALCULATOR It converts between gas, oil and ratio: you pick which of the three you want to know and set the other two with your finger. In litres, millilitres, gallons — US or imperial — or ounces, with the ratio as a percentage and as 1:n at the same time. One button leaves that ratio set on the engine screen, which is where it enters the jetting calculation. You open it from there, right below the oil mix. And the following, from the previous version, in case you are coming from 1.5.2: Logbook, track database, sharing and five new engines. LOGBOOK Save every session: what you fitted, what the app recommended, the number of laps, your best lap, the weather at that moment and your notes on how the engine behaved or what you had to change. Over time you get the record of the setups that worked best at each place. It can be exported to CSV. TRACKS 112 tracks from 21 countries with their altitude and coordinates. Search by name and the altitude goes straight into the setup, which is the figure that really moves it. SHARING Send a setup as a card over WhatsApp, email or whatever you use: your mechanic or your team mate can read it without having the app. NEW ENGINES • TM KZ-R2 and KZ-R3, from the 2023-2025 and 2026-2028 homologations. • Vortex VTZ. • Modena KK3. • IAME Screamer 4. Plus the IAME brand itself, which a bug kept out of the picker: its six engines can now be selected. From 17 to 33 engines in total. NEEDLE COMPARISON Overlays the profile of two DellOrto needles and shows, at every height, how much passage area one gains or loses against the other. So you can tell which one runs richer, and where in the throttle range. FINE TUNING Corrects the recommendation on high, mid and low when your engine asks for more or less fuel than expected. Remembered per engine. MODENA All five recalibrated: KK1, KK1R, MKZ, KK2 and KK3 now step apart from each other instead of asking for practically the same setup. ALSO • Search in the available parts: type "U1" and tick the whole family at once. • The help screens read better: proper lists and black text. FIXES • The main screen showed "nan" for setups saved with earlier versions. Fixed, and the ones left broken now repair themselves. • Settings closed itself when opening Available setups, Units and Appearance. • The fine tuning label overlapped its value. • The GPS weather station works again: it was never asking for location permission. • GPS and weather error messages were not being shown at all. Now they are. • Links to our other apps pointed at a retired domain and did not open. • Launch screen adapted to current iPhones.

Logbook, track database, sharing and five new engines. LOGBOOK Save every session: what you fitted, what the app recommended, the number of laps, your best lap, the weather at that moment and your notes on how the engine behaved or what you had to change. Over time you get the record of the setups that worked best at each place. It can be exported to CSV. TRACKS 112 tracks from 21 countries with their altitude and coordinates. Search by name and the altitude goes straight into the setup, which is the figure that really moves it. SHARING Send a setup as a card over WhatsApp, email or whatever you use: your mechanic or your team mate can read it without having the app. NEW ENGINES • TM KZ-R2 and KZ-R3, from the 2023-2025 and 2026-2028 homologations. • Vortex VTZ. • Modena KK3. • IAME Screamer 4. Plus the IAME brand itself, which a bug kept out of the picker: its six engines can now be selected. From 17 to 33 engines in total. NEEDLE COMPARISON Overlays the profile of two DellOrto needles and shows, at every height, how much passage area one gains or loses against the other. So you can tell which one runs richer, and where in the throttle range. FINE TUNING Corrects the recommendation on high, mid and low when your engine asks for more or less fuel than expected. Remembered per engine. MODENA All five recalibrated: KK1, KK1R, MKZ, KK2 and KK3 now step apart from each other instead of asking for practically the same setup. ALSO • Search in the available parts: type "U1" and tick the whole family at once. • The help screens read better: proper lists and black text. FIXES • The main screen showed "nan" for setups saved with earlier versions. Fixed, and the ones left broken now repair themselves. • Settings closed itself when opening Available setups, Units and Appearance. • The fine tuning label overlapped its value. • The GPS weather station works again: it was never asking for location permission. • GPS and weather error messages were not being shown at all. Now they are. • Links to our other apps pointed at a retired domain and did not open. • Launch screen adapted to current iPhones.

Fix an error and improve performance

Fix an error and improve performance

The possibility to modify the type of floats and their height is added.

Vortex RTZ and RSZ engines, IAME Screamer 2 and Screamer 3, Modena KK2 are added. A carburetion recommendation is offered for all engines when creating a new setting.

Dark mode support

Added new TM KZ-R1 engines.

Adds Vortex engines