# Jetting for DellOrto VHSH PRO — The most complete jetting app

> Advanced carburetion simulation for Dellorto VHSH30 engines and specific racing motors. (iPhone/iPad app by ISEnet.)

- Source: https://appshunter.io/ios/app/jetting-for-dellorto-vhsh-pro/id1455771430 (this page in markdown: same URL + `.md`)
- Developer: [ISEnet](https://appshunter.io/developer/811255764)
- Category: Sports, Utilities
- Price: $9.99
- Rating: 3.70/5 from 3 App Store ratings · 6 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.0 · 4 MB
- Languages: American English, French (France), German (Germany), Italian, European Portuguese, European Spanish
- Released: 2019-04-19
- Data updated: 2026-08-24
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/jetting-for-dellorto-vhsh-pro/id1455771430/reviews.md

## What is Jetting for DellOrto VHSH PRO?

This is the most advanced carburetion simulation application on the market for Dellorto VHSH30 carburetor engines.

It allows you to create carburations with all the information about the type of engine, track, weather conditions and carb setup (jets, needles, air screw, ...) making for each of them a simulation that allows you to compare them, choose a carburetion as a reference to be able to adapt it in each situation, take notes, check how each change in carburetion affects, etc.

A RECOMMENDED SETUP FOR YOUR ENGINE
Pick make and model and the app tells you what to start from. Included:
- TM K9, K9B, K9C, KZ10, KZ10B, KZ10C, KZ-R1, KZ-R2 and KZ-R3.
- Vortex RVS, RVX, RVXX, RVZ, RKZ, RSZ, RTZ and VTZ.
- Modena KK1, KK1R, MKZ, KK2 and KK3.
- IAME Screamer, Screamer 2, Screamer 3, Screamer 4, Shifter and Super Shifter 175.
- Maxter MXO, MXV, MXE, MXS and MXS2.

LOGBOOK
Save every session with what you fitted, what the app recommended, the laps, your best lap and the weather at that moment, and write down how the engine behaved or what you had to change. That way you keep the record of the setups that worked best at each place. It can be exported to CSV.

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 in which part of the throttle range.

TRACKS
112 tracks from 21 countries with their altitude, which is the figure that really moves the setup. Search by name and it goes in on its own.

SHARING
Send a setup as a card over WhatsApp, email or whatever you use, so your mechanic or your team mate can read it.

FINE TUNING
Corrects the recommendation on high, mid and low when your engine asks for more or less fuel than expected. The app remembers it for that engine.

The application consists of several screens and features:

- Simulation main screen: it shows the graph and the values of the configured carburations. One of them is marked as a reference so the rest can be compared against that configuration, and for each one you can edit its values or create new ones.

- Setup creation or edition screens: the user is guided by a set of screens on which to provide information about the engine (brand, model, fuel density, % oil mixture), carburetor configuration (high, low, diffusers, needle, air screw, jets, etc.), weather conditions (temperature, humidity, altitude, pressure... that can be picked up automatically), and the track (name, length, lap time, maximum speed, etc.).

- A functionality to collect the weather conditions of the nearest weather station: get the temperature, atmospheric pressure, humidity, altitude, air density, altitude by density and more values.

- Help on each screen, preferences to modify the language, appearance or available parts, etc.

The application has been tested by international racing teams, but can be used by anyone to optimize their engine.

## Key features

- Carburetion simulation
- Engine and track setup creation
- Weather condition integration
- Carburetor part configuration
- Engine recommendations
- Comparison of setups

## Recent user reviews (6 of 6)

All indexed reviews: https://appshunter.io/ios/app/jetting-for-dellorto-vhsh-pro/id1455771430/reviews.md

### 1/5 — Can’t customise?

*2025-06-17*

The app will not allow me to edit carb parts or change measurement units. No access to changing settings. The App just shuts down when these options are selected. Not working as described. Using iOS 18.5

### 3/5 — Bien

*2023-05-14*

Application qui bug un peu mais fonctionne dans l’ensemble vraiment pratique pour régler sa carburation

### 1/5 — Appli qui bugue

*2022-05-23*

L’appli quitte intempestivement quand on veut modifier la carburation ou quand on veut dupliquer une carburation existante. Dommage car l’appli semble intéressante.

### 3/5 — Keeps Crashing

*2022-02-10*

It’s user friendly but keeps crashing. Only stops if you reset to factory, but after that the graphics seems to go crazy. 

It’s also missing the fifth position on the needles adjustment.

If they fix this two points it would be a no brainer 5 stars.

### 3/5 — VHSH

*2021-01-01*

It would be better if it covered all applications, from Rok GP to KZ , then it would be a tool you could work with. Still fun to see the changes you can try.

### 4/5 — Needs some additional features

*2019-10-01*

Would like vortex rok Shifter to be included in the offerings.  Would like to be able to update baseline results and modified results with one weather update. This developer’s other apps create recommended baseline based on the nature of the track, Road race , long sprint, short sprint. Adding to this app would be helpful

## Frequently asked questions about Jetting for DellOrto VHSH PRO

### What is Jetting for DellOrto VHSH PRO used for?

Jetting for DellOrto VHSH PRO is used to simulate and optimize carburetion for Dellorto VHSH30 engines. It helps users create, compare, and fine-tune engine setups based on various factors like engine type, track conditions, and carburetor configurations.

### Does Jetting for DellOrto VHSH PRO offer recommendations for specific engines?

Yes, the app provides carburetion recommendations for several popular racing engines, including TM, Modena, Vortex, Maxter, and IAME models.

### Can Jetting for DellOrto VHSH PRO automatically collect weather data?

Yes, the application has a feature to collect weather conditions from the nearest weather station, including temperature, atmospheric pressure, humidity, and altitude, to aid in accurate simulations.

### What kind of information can I input for engine and setup creation in Jetting for DellOrto VHSH PRO?

You can input detailed information such as engine brand and model, fuel density, oil mixture percentage, carburetor configuration (jets, needles, air screw, diffusers), and weather conditions.

### Is Jetting for DellOrto VHSH PRO suitable for beginners or only professionals?

While tested by international racing teams, the app is designed to be usable by anyone looking to optimize their engine's performance. It guides users through the setup process.

### What devices is Jetting for DellOrto VHSH PRO available on?

Jetting for DellOrto VHSH PRO is available for iPhone, iPad, and iPod devices, indicating compatibility across Apple's mobile ecosystem.

### How often is Jetting for DellOrto VHSH PRO updated?

The application was last updated on February 26, 2024, with version 1.5.2. This suggests regular maintenance and potential feature additions.

### What is the price of Jetting for DellOrto VHSH PRO?

Jetting for DellOrto VHSH PRO is a paid application priced at $8.99.

## Version history (last 5 releases)

### 2.0 — 2026-08-13

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.

### 1.5.2 — 2024-02-26

Fix an error and improve performance

### 1.5.1 — 2024-02-15

Fix an error and improve performance

### 1.5 — 2023-08-15

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

### 1.4 — 2020-10-17

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.

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All apps by ISEnet: https://appshunter.io/developer/811255764

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*