# Fuel Injector Flow Rate Calc — Fuel Injector Flow Sizing

> Fuel Injector Flow Sizing (iPhone/iPad app by Shanghai Sheyuan Network Technology Co., Ltd..)

- Source: https://appshunter.io/ios/app/fuel-injector-flow-rate-calc/id6761711495 (this page in markdown: same URL + `.md`)
- Developer: [Shanghai Sheyuan Network Technology Co., Ltd.](https://appshunter.io/developer/1560626858)
- Category: Utilities
- Price: $1.99
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: English
- Released: 2026-04-08
- Data updated: 2026-07-08
- User reviews in markdown: https://appshunter.io/ios/app/fuel-injector-flow-rate-calc/id6761711495/reviews.md

## What is Fuel Injector Flow Rate Calc?

Building a turbo setup or swapping injectors and need to know if your fuel system can keep up? This calculator tells you exactly what flow rate each injector needs based on your target horsepower — so you never run lean under boost.

Enter target HP, cylinder count, BSFC, and duty cycle to get required flow per injector in lb/hr and cc/min. Supports gasoline, E85, diesel, and methanol with automatic BSFC defaults. Includes fuel pressure correction factor for non-standard rail pressures.

FEATURES:
- Required injector flow per cylinder in lb/hr and cc/min
- Fuel pressure correction factor calculator
- Gasoline, E85, diesel, and methanol support
- Automatic BSFC defaults per fuel type
- 1 to 16 cylinder configurations
- Duty cycle input for safe injector headroom

Essential tool for engine tuners, fuel system builders, and performance shop technicians. Works offline.


## Version history (last 3 releases)

### 1.0.2 — 2026-06-27

Added a More Pro Tools section to discover related field calculators.

### 1.0.1 — 2026-04-13

Bug fixes and performance improvements.

### 1.0 — 2026-04-08

No release notes.

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All apps by Shanghai Sheyuan Network Technology Co., Ltd.: https://appshunter.io/developer/1560626858

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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 2026-07-08.*