# Flow Smart v2 — Switch exhaust sound on mobile

> Switch exhaust sound on mobile (iPhone/iPad app by Kwang Teck Lim.)

- Source: https://appshunter.io/ios/app/flow-smart-v2/id1592230754 (this page in markdown: same URL + `.md`)
- Developer: [Kwang Teck Lim](https://appshunter.io/developer/1592230756)
- Category: Lifestyle, Entertainment
- Price: Free
- Age rating: 4+
- Requires: iOS 11.0 · 40 MB
- Languages: English, Chinese
- Released: 2021-10-28
- Data updated: 2026-05-15
- User reviews in markdown: https://appshunter.io/ios/app/flow-smart-v2/id1592230754/reviews.md

## What is Flow Smart v2?

Max Racing Exhaust Flow-Smart Version 2 exhaust valve control application. 

Max Racing Exhaust App is the best way to engage and experience life in motion. Empower yourself with real-time instrument updates & control your car exhaust sound on your smartphone. 

Easy to use with connectivity to Max Racing Exhaust valve system. 

*This application only supports Max Racing Exhaust 3 modes exhaust valve controller with OBDII module plugged in the car. 

Features:
• Race Mode.
• Eco Mode.
• Auto Mode.
• Speed meter real-time data.
• Rpm real-time data.
• Water oil temperature data.
• Intake temperature data.


## Version history (last 2 releases)

### 1.1 — 2021-11-30

Motion enhance for Auto mode.

### 1.0 — 2021-10-29

No release notes.

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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 2026-05-15.*