Comparison

FuelTech Datalog Viewer vs E

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

FuelTech Datalog Viewer

Analyze engine data logs from compatible FuelTech ECUs on your mobile device. View up to four channels simultaneously for quick data analysis and check status events for errors. Log files must be transferred to the device manually.

Highlights
  • View up to 4 recorded channels simultaneously
  • Quick data analysis
  • Check status events for errors
  • Supports FT450, FT500, FT500LITE, FT550, FT550LITE, FT600 models
  • Log file viewer for phone/tablet
Features
Read full description

The FuelTech Datalog Viewer application is a log file viewer for your phone or tablet to the Power FT line, which includes the FT450, FT500, FT500LITE, FT550, FT550LITE and FT600 models. With it, you can simultaneously view up to 4 recorded channels, allowing a quick data analysis. The status events are also available through the application, allowing you to easily check for errors while recording the log. Note: The application does not allow a direct connection to the ECU. You need to send the log file to the phone via email, WhatsApp, Dropbox or any other means. Visit http://www.fueltech.net for more information!

About

E

This app connects wirelessly to an EFI system, allowing users to monitor engine data and adjust various settings like air-fuel ratios and ignition timing. It offers a setup wizard for initial calibration and advanced tuning options for performance optimization.

Highlights
  • 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
Features
Read full description

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

Screenshots

FuelTech Datalog Viewer3 screens
E4 screens

Verdict

The call

The clearest difference is rating: FuelTech Datalog Viewer at 4.8 against E's 4.0. FuelTech Datalog Viewer also leads on iOS requirement (9.3 vs 16.0). E's advantage is ratings volume (22 vs 4). On price, review sentiment, update cadence and ads there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

FuelTech Datalog Viewer holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: E has 22 ratings behind it against 4, so its average is the more settled of the two. Written reviews complicate that: 40% of FuelTech Datalog Viewer's written reviews are positive against 45% of E's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

FuelTech Datalog Viewer ships an update every 9 months, E every 8 months. The most recent releases landed on June 5, 2026 and August 29, 2026 respectively.

Scorecard3 real differences · 7 level
FuelTech Datalog Viewer versus E: the parameters behind the verdict, then further details
ParameterFuelTech Datalog ViewerE
PriceFreeFree
Rating4.8 (4 ratings) — better4.0 (22 ratings)
Positive reviews40.0% of reviews45.5% of reviews — better
Number of ratings422 — better
Update frequencyEvery 9 monthsEvery 8 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.3 — better16.0
Further details — not scored
Size168 MB50 MB
Age rating4+4+
DeveloperFuelTechEdelbrock Corp

Customer experience

FuelTech Datalog Viewer

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive40.0%
Neutral0.0%
Negative60.0%

E

All ratings17 ratings
Positive70.6%
Neutral23.5%
Negative5.9%
Written reviews11 reviews
Positive45.5%
Neutral36.4%
Negative18.2%

In-app purchases

None

FuelTech Datalog Viewer

No in-app purchases

None

E

No in-app purchases

Questions

Is FuelTech Datalog Viewer free?
FuelTech Datalog Viewer is free to download, with no in-app purchases.
Is E free?
E is free to download, with no in-app purchases.
Which has better reviews, FuelTech Datalog Viewer or E?
FuelTech Datalog Viewer is rated higher. FuelTech Datalog Viewer averages 4.8 out of 5 from 4 ratings, while E averages 4.0 from 22 ratings.
Do FuelTech Datalog Viewer or E have ads?
Neither FuelTech Datalog Viewer nor E shows ads.
Which is updated more often, FuelTech Datalog Viewer or E?
FuelTech Datalog Viewer ships an update every 9 months, and E every 8 months. Most recently, FuelTech Datalog Viewer was updated on June 5, 2026 and E on August 29, 2026.

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