# Dyno Tuning Math Calculator — AFR Tuning Calculator

> AFR Tuning Calculator (iPhone/iPad app by Benjamin Fox.)

- Source: https://appshunter.io/ios/app/dyno-tuning-math-calculator/id1554585318 (this page in markdown: same URL + `.md`)
- Developer: [Benjamin Fox](https://appshunter.io/developer/1554585320)
- Category: Utilities
- Price: $5.99
- Age rating: 4+
- Requires: iOS 13.0 · 2 MB
- Languages: American English
- Released: 2021-02-20
- Data updated: 2025-01-09
- User reviews in markdown: https://appshunter.io/ios/app/dyno-tuning-math-calculator/id1554585318/reviews.md

## What is Dyno Tuning Math Calculator?

This is a simple math calculator for air fuel ratio tuning.  You enter your target AFR that you desire.  Make a dyno run and record AFR data.  Then Enter the data from the dyno run and data from your fuel map and then press calculate.  the output from the app will be the new fuel map value you can try for getting closer to your desired AFR target.  ex.  if you target is 12.8 and your actual recorded while running is 12.0. then you will need to subtract fuel from your fuel map and the app will tell you what percentage you will need to remove from the map to run closer to your desired/target AFR.


## Version history (last 1 release)

### 1.0 — 2021-02-20

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 2025-01-09.*