# E-Tuner 4 > Wireless EFI system tuning and engine data monitoring for Pro-Flo 4. (iPhone/iPad app by Edelbrock Corp.) - Source: https://appshunter.io/ios/app/e-tuner-4/id1579096205 (this page in markdown: same URL + `.md`) - Developer: [Edelbrock Corp](https://appshunter.io/developer/1579096297) - Category: Utilities - Price: Free - Rating: 4.00/5 from 22 App Store ratings · 11 written reviews indexed - Age rating: 4+ - Requires: iOS 16.0 · 50 MB - Languages: English - Released: 2021-08-03 - Data updated: 2026-08-29 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/e-tuner-4/id1579096205/reviews.md ## What is E? E-Tuner 4 is Edelbrock's latest exclusive iOS app for the Pro-Flo 4 and EZ Street EFI Systems. E-Tuner 4 communicates with your PF4 or EZ Street ECU via Bluetooth, so you can manage and live-tune a variety of ECU settings such as air-fuel ratios, ignition timing, idle speed, acceleration fuel, or cold start mixture as well as monitor engine and sensor data in real-time wirelessly from your iPhone or iPad. The E Tuner 4 Setup Wizard simplifies your Pro Flo 4 or EZ Street EFI setup by assisting you with selecting the proper base calibration for your specific application. All you need to know is the engine displacement (CID) and camshaft, and kit specifications, and you're good to go! E-Tuner 4 applies a solid base calibration so you can run the vehicle without having to change any tuning settings. But, if you'd like to make changes, E-Tuner 4 offers a selection of "Advanced Tuning" functions to help dial in your calibration and get the vehicle’s performance exactly where you want it. Whether you'd like to run a bit leaner while cruising for improved mileage, or advance timing for more performance, the Advanced Tuning section is there for you. A diagnostic page for troubleshooting purposes is also available. Once you're up and running, feel free to explore E-Tuner 4’s vivid gauge displays to monitor your engine's performance. Unlike other tuning hand-held combos, you can actually use your phone or tablet as a mini-dashboard once you're done tuning. You can also preview E-Tuner 4 without being connected to an Edelbrock EFI System by enabling "Demo Mode." This will allow you to access the app's main features, and interact with pages like the Setup Wizard, Advanced Tuning, and Gauge Displays to get a feel for how E-Tuner 4 functions. *** Warning! *** E-Tuner 4 is only compatible with the Edelbrock Pro-Flo 4 and EZ Street EFI Systems. It is NOT compatible with V1 E-Street, V2 E-Street, or Pro-Flo 3 EFI systems nor does it work with other Edelbrock Legacy EFI Systems. The E-Tuner 4 app supports all iPhones and iPads running iOS 16 and higher at this time. Please check back later for updates ## Key features - Bluetooth ECU communication - Live tuning of ECU settings - Real-time engine and sensor data monitoring - Setup Wizard for base calibration - Advanced tuning functions - Diagnostic troubleshooting page - Vivid gauge displays ## Recent user reviews (10 of 11) All indexed reviews: https://appshunter.io/ios/app/e-tuner-4/id1579096205/reviews.md ### 1/5 — Update *2026-04-12* Please update this app for the love of Pete ### 3/5 — It’s OK *2026-03-31* The Android version is way better than the iPhone. iPhone 17. ### 3/5 — No recent updates & customer service *2025-06-28* You haven’t updated this app for 2 years? Do you not have a product management team constantly trying to innovate your products? All your YouTube videos are old. What’s your marketing team doing???? You need to invest in marketing and updates. Get out there and compete with Holley. Also get more friendly customer service for EFI. One guy is friendly…I don’t want to put his name here. The rest are dismissive and have zero customer Service skills and I’ve left every call feeling frustrated. Like when asking what fuel pressure regulator they recommend for this system….the response was “there’s some on our website just go look.” Holley however gave me all their exact part numbers, what the differences were, and what they recommended. I ultimately chose Edelbrock for the port injection, so I’m going to roll The dice and hope The tech is solid and that I don’t need much customer Service. I hope Someone in leadership at Edelbrock hears this feedback. ### 5/5 — Very good *2025-01-11* Very good and easy. One recommendation is to add a GPS speedometer to the gauge channels, then it’d be perfect. ### 3/5 — Needs work *2024-09-03* Adequate at best. No data log capabilities. Hard to figure out a problem when you have one. The Android counterpart does have data logging. They need to update this app and also have a way to export the data. ### 3/5 — Hard to read under real world conditions *2024-05-04* It is good that there is now a version for IOS. It would be great if there were some configuration options for the gauge display. There is inadequate contrast between the red and black to read to be able to read well in full daylight. ### 4/5 — Almost as good as the android version *2021-12-02* It does everything that the android version does, except keep your device from turning the screen off. The telemetry is great too have, but it’s not very useful if you can’t see it. Can’t find an option in the phone’s settings or in the app to keep the screen on. What I would still like from the app is for it to rotate with the phone (vertical instead of horizontal) and to be able to have at least one page of gauges that I can configure (digital v. analog, position/size, what sensor is being displayed). ### 5/5 — Needs a little tweak *2021-10-08* Edit 10/8/2021 the temperature issue is fixed. To the people having trouble pairing this to your iPhone or iPad, you must first update the firmware using a non-iOS phone or tablet. The pro flo ecu will not work with your iPhone without this update and you can only update it with an android tablet or phone. After the update it will see and pair with your iOS device just fine. Old review: The current version (as of 8/12/21) displays the coolant temperature incorrectly. Hopefully this will be corrected in an update soon. ### 1/5 — Buddydog101 *2021-09-12* E tuner4 ecu search cannot find my iPhone 8 or iPad 6th gen will connect with asus tablet that came with profile 4. Was about to purchase a Samsung tablet when I found they written a iOS app. ### 5/5 — Finally here for ios *2021-09-10* Love the app! I don’t have to keep my tablet with me anymore. Once they fix the temperature issue with the app it will be perfect! ## Frequently asked questions about E ### What is E-Tuner 4 compatible with? E-Tuner 4 is exclusively compatible with the Edelbrock Pro-Flo 4 EFI System. It does not work with V1 E-Street, V2 E-Street, Pro-Flo 3, or other legacy Edelbrock EFI systems. ### Does E-Tuner 4 have ads? No, E-Tuner 4 is ad-free. As a free application, it does not display advertisements to users. ### What devices can I use E-Tuner 4 on? E-Tuner 4 supports all iPhones and iPads running iOS 13 and higher. This includes compatibility with iPods as well. ### How often is E-Tuner 4 updated? The latest version of E-Tuner 4 is 4.0.21, which was last updated on February 24, 2023. Users should check the app store periodically for future updates. ### Can I try E-Tuner 4 without an EFI system? Yes, you can enable 'Demo Mode' within E-Tuner 4 to preview its main features. This allows interaction with the Setup Wizard, Advanced Tuning, and Gauge Displays. ### What information do I need for the E-Tuner 4 Setup Wizard? The Setup Wizard simplifies Pro-Flo 4 EFI setup by assisting with base calibration. You only need to know your engine displacement (CID) and camshaft, and kit specifications. ### What is the user rating for E-Tuner 4? E-Tuner 4 has a user rating of 4.1 stars based on 17 ratings. This indicates generally positive user sentiment. ### What age rating does E-Tuner 4 have? E-Tuner 4 has an age rating of 4+. This means it is suitable for users aged 4 and above. ## Version history (last 5 releases) ### 4.0.22 — 2026-04-23 WHAT’S NEW This revision adds support for Edelbrock’s latest EFI system, EZ Street EFI. The E-Tuner 4 app now seamlessly auto-detects your Pro-Flo 4 or EZ Street EFI system and automatically opens the appropriate calibration features. The EZ Street EFI (#30700) is Edelbrock’s newest EFI system, featuring a simplified throttle-body EFI design combined with full E-Tuner 4 calibration functionality. ### 4.0.21 — 2023-02-24 WHAT'S NEW bug fix Set-Up Wizard Forced Induction MAP sensor select. ### 4.0.20 — 2022-01-28 WHAT'S NEW includes fix to keep screen on while app is running. ### 4.0.19 — 2021-10-07 WHAT'S NEW includes new firmware, temperature conversion fix, minor bug fixes and updated documentation. ### 4.0.17 — 2021-08-03 No release notes. ## Apps similar to E | App | Rating | Price | Category | | --- | --- | --- | --- | | [Holley Sniper EFI](https://appshunter.io/ios/app/holley-sniper-efi/id6449716415) | 3.2 (13) | Free | Utilities | | [PowerProbe Link](https://appshunter.io/ios/app/powerprobe-link/id6476737385) | 3.5 (4) | Free | Utilities | | [Switch-Pros](https://appshunter.io/ios/app/switch-pros/id1658883630) | 3.9 (22) | Free | Utilities | | [Dakota Digital](https://appshunter.io/ios/app/dakota-digital/id1444935257) | 3.1 (49) | Free | Utilities | | [Holley Terminator X](https://appshunter.io/ios/app/holley-terminator-x/id6736920316) | 4.4 (5) | Free | Utilities | | [MSD Ultra 6AL](https://appshunter.io/ios/app/msd-ultra-6al/id1604967508) | 5.0 (1) | Free | Utilities | ## More apps by Edelbrock Corp - [TC Tuner](https://appshunter.io/ios/app/tc-tuner/id1579604513) - [E-Tuner 4+](https://appshunter.io/ios/app/e-tuner-4-plus/id1589779289) - [TCI TUNER](https://appshunter.io/ios/app/tci-tuner/id6499452376) All apps by Edelbrock Corp: https://appshunter.io/developer/1579096297 ## Related topics [edelbrock](https://appshunter.io/ios/topics/edelbrock) · [edelbrock corp](https://appshunter.io/ios/topics/edelbrock-corp) · [edelbrock e tuner](https://appshunter.io/ios/topics/edelbrock-e-tuner) · [tuner car](https://appshunter.io/ios/topics/tuner-car) · [car tuner street](https://appshunter.io/ios/topics/car-tuner-street) · [gytr](https://appshunter.io/ios/topics/gytr) --- *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 2026-08-29.*