# aRacer X Tune

> Advanced engine tuning and analysis tool for specific ECU series. (iPhone/iPad app by ARACER SPEEDTEK INC..)

- Source: https://appshunter.io/ios/app/aracer-x-tune/id1589890610 (this page in markdown: same URL + `.md`)
- Developer: [ARACER SPEEDTEK INC.](https://appshunter.io/developer/1218691866)
- Category: Utilities
- Price: Free
- Rating: 2.60/5 from 17 App Store ratings · 84 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.6 · 120 MB
- Languages: American English, Japanese, Chinese (Simplified, China), Thai, Chinese (Traditional, Taiwan), Vietnamese
- Released: 2021-12-08
- Data updated: 2026-08-19
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/aracer-x-tune/id1589890610/reviews.md

## What is aRacer X Tune?

X Tune APP is aRacer puts the experience in participating of global competitions in the past, providing for new generation ECU for engine adjustment. It is suitable for RC Super X and RC Mini X series ECUs with more user-friendly interface, more convenient to use, and is suitable for holiday track days and daily use. It uses WiFi transmission to complete the adjustment and analysis of the relevant data in a more stable and faster way! In addition, you can also pay to turn on the built-in ECU functions according to the needs of the use, so it is the fun of playing in the engine tuning can be extended infinitely!!
X Tune has more powerful built-in functions including (depending on different sales countries and regions, related functions need to be paid to turn on): 

# More powerful adjustment functions: 
1. 20x17 (RPM x TPS%) fuel adjustment 
2. 20x9 (RPM x TPS%) ignition timing adjustment (paid to upgrade can enable switching of 3 ignition timing MAP) 
3. 20x9 (RPM x TPS%) target air-fuel ratio setting (paid to upgrade can enable switching of 3 target air-fuel ratio MAP) 

# More powerful AT automatic adjustment function and more accurate & fast actual A/F data feedback through AF2 / AF1:
1. Correct the fuel value% & A/F value in time and record it in the 20x17 fuel MAP 
2. The corrected result can be used as a base fuel MAP

# New features: 
1. TCS tracking functions:
    # The stock is not equipped with TCS, and it can be easily work in rainy and slippery conditions after starting 
    # The stock is equipped with TCS, can provide 3 levels adjustable 
2. 3 levels of fuel correction in stock narrowband O2 sensor
Adjustable injection phase 
3. Response Button for power response adjustment. After the upgrade, you can switch 3 target air-fuel & ignition timing MAPs in time
4. Guided idle speed setting 
5. Guided quick shift triggered pressure setting 
6. New style Backfire / Idle lope control 
7. New analysis tools

# Notes:
1. X Tune is only suitable for safe and closed road track, and don’t allow to be used in public road!! 
2. After paying to turn on the ECU functions, no refund can be made, because the function has been turned-on in the ECU! Before paying, you can use the trial function to confirm the applicability! 
3. The adjustment function may damage the engine, please find a qualified professional technician to adjust it and it is not suitable for general users! Any adjustment causes engine damage and dangerous accidents, the company cannot provide any compensation! 

About the details, please refer to: https://www.aracer-speedtek.com/product_d.php?lang=tw&tb=1&id=1770

## Key features

- Fuel and ignition timing adjustment
- Automatic adjustment functions
- Traction control system (TCS)
- Power response adjustment
- Guided idle speed setting
- Backfire/Idle lope control
- New analysis tools

## Recent user reviews (10 of 84)

All indexed reviews: https://appshunter.io/ios/app/aracer-x-tune/id1589890610/reviews.md

### 5/5 — Have to update a lot

*2026-07-17, version v3.2.17*

A powerful app with fast connectivity.  The only major problem is even there’s a new version available, it doesn’t automatically update so you have to delete the app and reinstall periodically.  New accessories and ECUs always require updating the app too.

### 1/5 — アプリが落ちる

*2026-05-29*

2026.05.27 アプリを最新版にアップデートしました。
その後からソフト使用中にソフトが頻繁にフリーズ、シャットダウンするようになった。
AT中にも落ちるので早急に対策版をリリースして欲しい。

### 3/5 — 為什麼不能下載

*2026-05-23, version v3.2.12*

為什麼不能下載

### 1/5 — 希望不要有開頭的聲音

*2026-04-28, version v3.1.2*

廣告可以但可以不要有聲音嗎
Wifi 的已經比藍牙的難連線了
連著音樂都會被打斷

### 5/5 — アップデート

*2026-04-09*

今日現在iPhoneのIOS更新でWifi接続できなくなりました。対処お願いします！

### 1/5 — 一直閃退打不開

*2026-03-13, version v3.1.2*

非常糟

### 4/5 — 開頭音效

*2026-02-20, version v3.1.2*

如題，開頭音效可否靜音，會打斷原本在播的音樂，而且是突如其來的高頻排氣管聲音很容易被嚇到

### 1/5 — 開頭動畫可不可以關掉

*2025-12-24, version v3.1.2*

一開頭就是動畫 又吵 音樂聽一半還被中斷 真的很煩

### 3/5 — 廣告關不掉

*2025-12-13, version v3.0.21*

如題，一開起來就是廣告，還關不掉，根本無法進入主界面使用

### 1/5 — Can't closed popup ads

*2025-12-11, version v3.0.21*

Popup ad is to big, until the close button is not visible on the screen, so i can't use the app

## Frequently asked questions about aRacer X Tune

### What is aRacer X Tune used for?

aRacer X Tune is an engine tuning and analysis application designed for specific ECU series like RC Super X and RC Mini X. It allows users to adjust fuel, ignition timing, and other engine parameters for performance optimization.

### Is aRacer X Tune free to use?

Yes, aRacer X Tune is available for free. However, certain advanced adjustment functions and features require a paid upgrade to be activated within the ECU.

### Can I use aRacer X Tune on public roads?

No, aRacer X Tune is strictly intended for use on safe and closed road tracks. It is not permitted for use on public roads.

### What are the risks of using aRacer X Tune?

The adjustment functions provided by aRacer X Tune may potentially damage the engine. It is recommended to have adjustments performed by a qualified professional technician, as the company is not liable for any engine damage or accidents.

### Does aRacer X Tune have ads?

No, aRacer X Tune does not contain advertisements. The application is ad-free, allowing for an uninterrupted user experience.

### What devices does aRacer X Tune support?

aRacer X Tune is compatible with iPhone, iPad, and iPod devices. It is designed for Apple's mobile ecosystem.

### How often is aRacer X Tune updated?

The latest version of aRacer X Tune is v3.1.2, which was last updated on December 18, 2025. While this indicates a recent update, the frequency of future updates is not specified.

### What is the user rating for aRacer X Tune?

aRacer X Tune has an average rating of 2.4 stars based on 14 user ratings. This suggests that while some users find value in the app, there may be areas for improvement based on overall user sentiment.

## Version history (last 5 releases)

### v3.2.17 — 2026-06-10

v3.2.17
Support XMAX 300 (2025) Auto Wind Shield function

### v3.2.16 — 2026-06-02

v3.2.16
Fixed crash issue of AutoTune

### v3.2.15 — 2026-05-27

v3.2.15
Fixed AutoTune crash Issue

### v3.2.12 — 2026-05-21

v3.2.12
Support SxS platform
Add Tuning risk notice and data use consent

### v3.1.2 — 2025-12-18

v3.1.2
Updated language package.

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## More apps by ARACER SPEEDTEK INC.

- [aRacerMobile](https://appshunter.io/ios/app/aracermobile/id1218691867)
- [aRacerSmartLite](https://appshunter.io/ios/app/aracersmartlite/id1291834852)
- [aRacerSmart](https://appshunter.io/ios/app/aracersmart/id1296085645)
- [aRacerOBD](https://appshunter.io/ios/app/aracerobd/id1448664407)
- [Ural Motorcycles OBD](https://appshunter.io/ios/app/ural-motorcycles-obd/id1457652319)

All apps by ARACER SPEEDTEK INC.: https://appshunter.io/developer/1218691866

## Related topics

[aracer x tune](https://appshunter.io/ios/topics/aracer-x-tune) · [aracer](https://appshunter.io/ios/topics/aracer) · [racer x](https://appshunter.io/ios/topics/racer-x) · [xtune](https://appshunter.io/ios/topics/xtune) · [danalock classic](https://appshunter.io/ios/topics/danalock-classic)

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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 2026-08-19.*