# Fuelpak FP3

> iPhone-based flash tuner for Harley-Davidson motorcycle performance optimization. (iPhone/iPad app by V&H Performance, LLC.)

- Source: https://appshunter.io/ios/app/fuelpak-fp3/id786747325 (this page in markdown: same URL + `.md`)
- Developer: [V&H Performance, LLC](https://appshunter.io/developer/786747328)
- Category: Utilities
- Price: Free
- Rating: 4.00/5 from 156 App Store ratings · 105 written reviews indexed
- Age rating: 4+
- Requires: iOS 11.0 · 61 MB
- Languages: American English, French (France), German (Germany), Hindi, Japanese, European Portuguese, European Spanish, Swedish
- Released: 2014-03-03
- Data updated: 2026-08-27
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/fuelpak-fp3/id786747325/reviews.md

## What is Fuelpak FP3?

Tune your Harley-Davidson® with your iPhone!

Fuelpak® FP3 from Vance & Hines makes your iPhone one of the most powerful flash tuners available. You've already selected the best exhaust system for your Harley, now complete the package with the Fuelpak FP3 for optimized performance.
With this app and the required hardware you can:
- Download dyno tuned maps specific for your bike/pipe combination
- Adjust individual parameters in your fuel and spark tables
- AutoTune your bike
- Read and clear Diagnostic Trouble Codes
- View live sensor data

At any time, if you need assistance tuning your Harley, you can upload your map to a Vance & Hines Customer Service Representative for review and download the recommended changes.

("Harley-Davidson" is a registered trademark of Harley-Davidson Motor Company.)

## Key features

- Download dyno-tuned maps
- Adjust fuel and spark tables
- AutoTune functionality
- Read and clear diagnostic codes
- View live sensor data
- Map upload for Vance & Hines review

## What do users think of Fuelpak FP3?

Overall sentiment: mixed

**Pros**

- 👍 Easy to use interface
- 🚀 Improved performance
- 💡 Great for basic stage one tunes
- 🔧 User-friendly for basic tuning
- ✅ Works well for many users
- 💰 Good value for money
- 🛠️ Simplifies tuning process
- 💨 Quick throttle response
- 🌡️ Reduces engine temperature
- ✅ Flawless operation for some

**Cons**

- 🐛 Frequent app crashes
- 🐛 Connectivity issues (Bluetooth/WiFi)
- 🐛 App freezes or becomes unresponsive
- 🐛 Updates break functionality
- 🐛 Inconsistent performance across devices (iOS vs Android)
- 🐛 Auto-tune issues
- 🐛 Maps not always available or accurate
- 🐛 Customer support unresponsiveness
- 🐛 Limited functionality for advanced tuning
- 🐛 Outdated app for newer iPhone models
- 🐛 Issues with flashing firmware
- 🐛 Rev limiter issues
- 🐛 Phone remains unlocked after connection loss

**Commonly reported bugs**

- App crashes on launch
- Bluetooth disconnects frequently
- Cannot adjust or change settings
- Average MPG stopped working on iOS
- Says not authorized on iOS
- Won't connect to bike
- Won't auto-tune properly
- App crashes on launch after update
- Bluetooth disconnects after 2 seconds
- Cannot connect via WiFi or wireless
- App kicks off Bluetooth connection
- APIs time out, cannot find server
- Constant timeout issues
- Only works on WiFi
- iPhone update broke the app
- App crashes, cannot connect to Bluetooth or wireless
- Auto Tune doesn't work with latest iOS update
- Table doesn't populate for Auto Tune
- App crashes every time it's opened
- Rev limiter broken, never goes up
- App stuck in auto tune, won't install firmware update
- Bike won't start after update
- Awful connectivity, app disconnects FP3
- Flaky Bluetooth connectivity
- Error occurred/ Connection lost
- Live sensor data is off
- Devices will not connect to the fp3 after update
- App froze on first use
- App crashes on iPhone 5s (iOS 7.1)
- Parking brake warning light issue
- Bike would not run with program loaded

**Most requested features**

- Adjust coloring on sensor data screen
- Orientation lock into landscape
- Add clock and music controls to sensor screens
- Redesign to accommodate iPhone notch
- More cam selections for Sportster
- Option to NOT check for firmware updates on launch
- Option to save maps to device
- Option to post map pic when posting to Facebook
- History for bike configurations
- Detailed instructions for advanced features
- Ability to data log
- Record max BHP and Torque figures
- Offer different styles for real-time sensor data
- Support for TAB Performance Mufflers with Zombie Baffles
- Map for V&H True Duels with Stock intake
- Allow phone to lock after Bluetooth disconnect

## Recent user reviews (10 of 105)

All indexed reviews: https://appshunter.io/ios/app/fuelpak-fp3/id786747325/reviews.md

### 1/5 — Trash

*2025-06-18, version 3.7.5*

It doesn’t work.  It use to work treats ago now you can’t adjust or change anything

### 1/5 — Assistenza e funzionamento troppo superficiali

*2025-03-29, version 3.7.5*

Ho acquistato il prodotto in seguito ho installato tachimetro koso e non ha più funzionato correttamente devo sempre staccarlo mi pare assurdo

### 5/5 — Well worth it… if you can find one

*2024-08-26, version 3.7.5*

Great app and product. Don't you dare make this obsolete because you came out with the fp4

### 1/5 — non aggiorna piu

*2023-11-26, version 3.7.5*

e da anni che ho la fp3 ora non aggiornano piu il firmware e  non è piu possibile fare autotune. le celle non vengono piu riempite.

riproverò a chiedere al servizio cliente ma fanno fatica a risoondere

### 5/5 — Awesome app

*2022-11-16, version 3.7.5*

Very happy with this app. It would be even better to be able to adjust colouring on sensor data screen and orientation lock into landscape.

### 5/5 — FP3 App

*2022-10-03, version 3.7.5*

Makes tuning your Hog so much easier and let’s you know what’s going on with it also and if you have trouble some where and if you have a question Vance and Hines is there so glad they made this system

### 3/5 — I wish they would stay on top of this app.

*2022-09-25, version 3.7.5*

I’m pretty happy with my FP3, I just wish they would stay on top of the app.  I kinda feel like once the FP4 came out V&H just stopped any further work with the FP3.   There is an issue I reported a long time ago they jus never addressed.  V&H if you see this contact me to fox it please.

### 2/5 — Good with Android not IOS

*2022-08-15, version 3.7.5*

Switched from Samsung to Apple. The average MPG stopped working, can’t adjust anything anymore. Says I’m not authorized. Pisses me off. Honestly thinking of ditching the Fuelpak. Looking at tweaking for a little more fine tuning, I can’t! Fix the app! Ok with Android but not IOS in my experience!

### 1/5 — Waste of money

*2022-04-26, version 3.7.5*

I was excited about my fp3, in anticipation of slowly doing some upgrades to my street glide.  Added head pipes and slip ons, put those in to the program, no real change other than the noticeable sound of the bike.  About a year later I added 525 reaper cams.  I picked the bike up, ran great, lots of low end torque, really woke her up.  Thought I should update the FP3, was worried about leaning the bike out, so I did, it has never run so bad… won’t even idle.  So I went back to the previous tune, even worse.  I tried the “auto tune” mode, all it did was let me struggle to leave every stop sign for 3 days, and that was the outcome… super disappointed.. I’m not a mechanic, or someone who tunes bikes, but if you’re going to sell this product as something that is user friendly, at least have it work, sort of!!!

### 5/5 — 2008 Harley Davidson Ultra Classic

*2022-04-13, version 3.7.5*

I bought this a few years ago and hadn't any luck getting autotune to work passed 40% tps no matter how hard i rode the bike and i blamed the FP3 for not working right. Anyways I found my issue that was causing my autotune not to work right. I found a bolt missing from my throttle body that bolts it to rear cylinder. Once i got bolt back in the Autotune function works now for me. I never got any codes and it was just by chance i seen bolt missing as i was cleaning my bike and had a flashlight making sure no valve cover leaks etc. I’m a happy camper now !

## Frequently asked questions about Fuelpak FP3

### What does the Fuelpak FP3 app do?

The Fuelpak FP3 app transforms your iPhone into a powerful flash tuner for Harley-Davidson motorcycles. It allows you to download pre-tuned maps, adjust engine parameters like fuel and spark, and use an AutoTune feature to optimize your bike's performance.

### What are the key features of the Fuelpak FP3 app?

Key features include downloading dyno-tuned maps specific to your bike and exhaust, the ability to manually adjust individual fuel and spark table parameters, an AutoTune function for self-calibration, reading and clearing diagnostic trouble codes, and viewing live sensor data from your motorcycle.

### Is the Fuelpak FP3 app free to use?

The Fuelpak FP3 app itself is free to download and use. However, it requires the Vance & Hines Fuelpak FP3 hardware to function as a flash tuner for your Harley-Davidson motorcycle.

### What Harley-Davidson models are compatible with Fuelpak FP3?

The app is designed to tune Harley-Davidson motorcycles. Specific compatibility details for your bike and exhaust combination can be found by downloading dyno-tuned maps tailored for your setup within the app.

### Can Vance & Hines help me tune my Harley?

Yes, if you need assistance tuning your Harley, you can upload your current map to a Vance & Hines Customer Service Representative through the app. They can review your map and provide recommended changes for download.

## Version history (last 5 releases)

### 3.7.5 — 2021-10-26

Thank you for choosing FP3. With this release, we have fixed a few bugs. We always appreciate your feedback and suggestions.

### 3.7.4 — 2021-08-23

Thank you for choosing FP3. With this release, we have fixed a few bugs. We always appreciate your feedback and suggestions.

### 3.7.3 — 2021-08-03

Thank you for choosing FP3. With this release, we have fixed a few bugs. We always appreciate your feedback and suggestions.

### 3.7.2 — 2021-05-10

Thank you for choosing FP3. With this release, we have added some improvements to server connectivity. We always appreciate your feedback.

### 3.7.1 — 2021-05-05

Thank you for choosing FP3. With this release, we have fixed a few bugs. We always appreciate your feedback and suggestions.

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## More apps by V&H Performance, LLC

- [V&H Sounds](https://appshunter.io/ios/app/v-and-h-sounds/id1035000922)
- [Code:READ](https://appshunter.io/ios/app/coderead/id1364698606)
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- [FPX + Track](https://appshunter.io/ios/app/fpx-plus-track/id6746137924)

All apps by V&H Performance, LLC: https://appshunter.io/developer/786747328

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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 2026-08-27.*