# Fuelpak FP4

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

- Source: https://appshunter.io/ios/app/fuelpak-fp4/id1513978426 (this page in markdown: same URL + `.md`)
- Developer: [V&H Performance, LLC](https://appshunter.io/developer/786747328)
- Category: Utilities
- Price: Free
- Rating: 1.81/5 from 54 App Store ratings · 102 written reviews indexed
- Age rating: 4+
- Requires: iOS 26.0 · 12 MB
- Languages: English, French, German, Hindi, Japanese, Portuguese, Spanish, Swedish
- Released: 2022-02-25
- Data updated: 2026-08-31
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/fuelpak-fp4/id1513978426/reviews.md

## What is Fuelpak FP4?

Tune your Motorcycle with your iPhone!

Vance & Hines FP4 makes your iPhone one of the most powerful flash tuners available. You've already selected the best exhaust system for your bike, now complete the package with the FP4 for optimized performance.
With this app and the required hardware you can:
- Download dyno tuned maps specific for your bike/pipe combination
- View live sensor data
- Read and Clear Diagnostic Trouble Codes
- View downloaded maps and flash back to stock settings
- Access to informational videos and customer support features

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

## Key features

- Flash dyno-tuned maps
- View live sensor data
- Read/clear diagnostic codes
- Revert to stock settings
- Access support videos

## What do users think of Fuelpak FP4?

Overall sentiment: negative

**Pros**

- 🚀 Wakes up the bike
- 👍 Good for stage 1 tuning
- 👍 Works fine on iOS

**Cons**

- 🐛 Bluetooth connection issues
- 🐛 App crashes frequently
- 🐛 Unreliable sensor data
- 🐛 Lack of features compared to FP3
- 🐛 Compatibility issues with older bikes
- 🐛 Autotune function not working

**Commonly reported bugs**

- App freezes during firmware updates
- Unable to apply auto-tune mapping
- Incorrect bike information displayed
- Disconnects frequently during use

**Most requested features**

- More exhaust and intake options
- Improved Bluetooth stability
- Throttle sensitivity adjustment
- Speedometer calibration
- Cruise control integration

## Recent user reviews (10 of 102)

All indexed reviews: https://appshunter.io/ios/app/fuelpak-fp4/id1513978426/reviews.md

### 1/5 — Mostly useless for tuning.

*2026-05-25, version 2.2.3*

It’s good for monitoring temps but not tuning . Way over priced . Wouldn’t buy again!

### 2/5 — Works but has major issues on iOS

*2026-05-05, version 2.2.4*

Very glitchy app. Will not stay connected to Bluetooth so if your trying to autotune or see live data you can forget about it. Had issues flashing maps. Says failed all the time but will actually flash the map to your maps page. Could be good if it wasn’t so buggy, especially for the price

### 5/5 — Nice tuner

*2026-05-02, version 2.2.3*

Absolutely no issues flashing my bike. Ran good even before autotune. I like how it shows you RPM, throttle position, temperature and everything. I do recommend this tuner perfect for stage one set up

### 2/5 — Not happy with it

*2026-04-24, version 2.2.3*

Wont even let me access any maps or any options just says choose !

### 1/5 — 2020 road glide

*2025-10-19, version 2.2.2*

This tuner was such a waste of money. Really wish I could get a refund

### 3/5 — Won’t flash older Harleys

*2025-07-29, version 2.2.2*

Won’t flash if battery voltage is below 12v. Apparently older (2008) Harleys have accessory draw that pulls voltage down to 11.7v, so must remove accessory fuse to flash. Which means removing the seat. It’s a pain. 
Support said there is a fix for iPhone App, but it hasn’t been released yet.  

Also, similar to the other reviews, it can be a pain having to restart the app while on the road just to re-establish the Bluetooth connection. 

I had hoped for a better user experience from a $600+ product.

(July: promised update still not available in the App Store. Still won’t flash. What’s the point?)

### 3/5 — Won’t flash older Harleys

*2025-06-03, version 2.2.2*

Won’t flash if battery voltage is below 12v. Apparently older (2008) Harleys have accessory draw that pulls voltage down to 11.7v, so must remove accessory fuse to flash. Which means removing the seat. It’s a pain. 
Support said there is a fix for iPhone App, but it hasn’t been released yet.  

Also, similar to the other reviews, it can be a pain having to restart the app while on the road just to re-establish the Bluetooth connection. 

I had hoped for a better user experience from a $600+ product.

### 3/5 — Good information but spotty at best with connectivity

*2025-03-13, version 2.2.2*

The app has a lot of information however it disconnects frequently when riding which makes it hard to use the autotune feature. 

Also there is no way to reset the average MPG to get a true reading on a ride.  Hopefully there will be more frequent updates to the app that corrects these issues and proves better enhancements.

### 1/5 — IPHONE APP & FP4

*2025-03-11, version 2.2.2*

Trash🗑️. Keeps disconnecting from Bluetooth. Both 🚮

### 1/5 — App needs improvements

*2024-10-04, version 2.2.2*

The app needs some work - it doesn’t stay connected in the sensor tab

## Frequently asked questions about Fuelpak FP4

### What does the Fuelpak FP4 app do?

The Fuelpak FP4 app transforms your iPhone into a powerful flash tuner for your motorcycle. It allows you to download and flash custom performance maps, view live sensor data from your bike, and read or clear diagnostic trouble codes.

### What are the key features of the Fuelpak FP4 app?

Key features include the ability to download dyno-tuned maps specific to your bike and exhaust system, view real-time sensor data, read and clear diagnostic trouble codes, and flash back to your bike's stock settings. It also provides access to informational videos and customer support.

### How much does the Fuelpak FP4 app cost?

The Fuelpak FP4 app itself is free to download. However, it requires the purchase of specific Vance & Hines hardware to function as a flash tuner. The app does not have in-app purchases or advertisements.

### What is the primary use case for the Fuelpak FP4 app?

The primary use case is to optimize your motorcycle's performance, especially after installing a new exhaust system. By flashing custom maps, you can ensure your engine runs efficiently and powerfully with your specific setup.

### Can I get help if I have trouble tuning my bike?

Yes, if you need assistance tuning your bike, you can upload your map to a Vance & Hines Customer Service Representative for review. They can then recommend changes and you can download the updated settings.

## Version history (last 5 releases)

### 2.2.4 — 2026-05-04

We added UI/UX changes to make navigation easier and updated support for 2024 motorcycles. Have fun and drive safe!

### 2.2.3 — 2026-01-26

Metric to Imperial gauge switch added and we fixed some bugs and added UI updates to make the app more user friendly.

### 2.2.2 — 2024-06-10

FP4 keeps getting better.  This release brings a more functional Demo Mode and includes some UI updates.  We also fixed a few bugs that stoped slot descriptions.  We continue to improve the app and add functionality.  Thank you for your feedback and thank you for using FP4.

### 2.2.1 — 2024-05-15

FP4 keeps getting better. This update fixes an issue with flashing and map descriptions. We continue to improve the app and add functionality.  Thank you for your feedback and thank you for using FP4.

### 2.2.0 — 2024-05-13

FP4 keeps getting better. This release brings updated 2024 models to Demo Mode, includes UI updates, and better BlueTooth connection when receiving calls or messaging. We continue to improve the app and add functionality.  Thank you for your feedback and thank you for using FP4.

## Apps similar to Fuelpak FP4

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [益电宝-数据改变未来](https://appshunter.io/ios/app/id1434796500) | — | Free | Utilities |
| [HeatNext](https://appshunter.io/ios/app/heatnext/id1440372440) | — | Free | Utilities |
| [GHIA KIDS](https://appshunter.io/ios/app/ghia-kids/id1434789680) | — | Free | Utilities |
| [Omni Relprev](https://appshunter.io/ios/app/omni-relprev/id1434690340) | — | Free | Utilities |
| [MISD Tip](https://appshunter.io/ios/app/misd-tip/id1440174120) | — | Free | Utilities |
| [佐敦](https://appshunter.io/ios/app/id1448255140) | — | Free | Utilities |

## More apps by V&H Performance, LLC

- [Fuelpak FP3](https://appshunter.io/ios/app/fuelpak-fp3/id786747325)
- [V&H Sounds](https://appshunter.io/ios/app/v-and-h-sounds/id1035000922)
- [Code:READ](https://appshunter.io/ios/app/coderead/id1364698606)
- [FPX + Track](https://appshunter.io/ios/app/fpx-plus-track/id6746137924)

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

## Related topics

[fuelpak fp3](https://appshunter.io/ios/topics/fuelpak-fp3) · [vance and hines fp3](https://appshunter.io/ios/topics/vance-and-hines-fp3) · [vance and hines fuel pack](https://appshunter.io/ios/topics/vance-and-hines-fuel-pack) · [vance and hines fuelpak](https://appshunter.io/ios/topics/vance-and-hines-fuelpak) · [vance and hines](https://appshunter.io/ios/topics/vance-and-hines) · [hccast](https://appshunter.io/ios/topics/hccast)

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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 2026-08-31.*