# RSiAJP — TVR Diagnostics > Real-time ECU diagnostics and monitoring for TVR AJP engined cars. (iPhone/iPad app by Grenat.) - Source: https://appshunter.io/ios/app/rsiajp/id1234725485 (this page in markdown: same URL + `.md`) - Developer: [Grenat](https://appshunter.io/developer/1234725484) - Category: Utilities - Price: $22.99 - Rating: 5.00/5 from 1 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 14.0 · 33 MB - Languages: American English - Released: 2017-07-10 - Data updated: 2026-08-29 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/rsiajp/id1234725485/reviews.md ## What is RSiAJP? This application enables the display and background monitoring of ECU information for TVR AJP (V8 and S6) engined cars (Cerbera, Tamora, Tuscan, Sagaris, T350). The application connects to the car's MBE 941/970 ECU using a Bluetooth Low Energy serial adapter available from http://http://rsiajp.com The app displays real time data such as water temperature, throttle position, air temperature, ignition advance, rpm, etc... as well as live and logged faults as reported by the ECU. Also, though the use of the onboard GPS, your current travelling speed is available for display. In addition to displaying the data, the application enables the user to reset the ECU's logged faults, service interval, adaptives and throttle (S6) and can be used to log live data for export via email. Warning thresholds can be setup on individual data items, the thresholds will be displayed through colour coding on the gauges. A fully simulated mode is available to show the application to your friends too, even though you're not connected to a car. More details on our website: http://rsiajp.com and our Facebook page https://www.facebook.com/rsiajp The author of the application will accept no liability whatsoever for any damage to the car, engine or ECU resulting from the use of the application. By running the application you accept full responsibility of any potential consequences. ## Key features - Real-time ECU data display - Live and logged fault monitoring - GPS speed, coordinates, and heading - ECU fault and service interval reset - Customizable alert thresholds with audio - Data logging for export - Simulated mode for demonstration ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/rsiajp/id1234725485/reviews.md ### 5/5 — Seamless operation *2024-08-25* Thank you for your help and support ### 5/5 — Fantastic ! *2017-12-29* We have perfectly setup the engine thanks to this application. Now I can use my car safely, I have perfect visibility of everything that happens in the engine. I highly recommend this application. thanks you so much ! ## Frequently asked questions about RSiAJP ### What cars is RSiAJP compatible with? RSiAJP is designed for TVR cars equipped with AJP (V8 and S6) engines, including models like the Cerbera, Tamora, Tuscan, Sagaris, and T350. It connects to the car's MBE 941/970 ECU. ### How does RSiAJP connect to the car's ECU? The application connects to the car's MBE 941/970 ECU using a Bluetooth Low Energy serial adapter. This adapter can be purchased from the developer's website, http://rsiajp.com. ### What kind of real-time data can RSiAJP display? RSiAJP can display a variety of real-time engine data, including water temperature, throttle position, air temperature, ignition advance, and RPM. It also shows live and logged faults reported by the ECU. ### Can RSiAJP help reset car maintenance indicators? Yes, RSiAJP enables users to reset the ECU's logged faults, service interval, adaptives, and throttle (for S6 engines). This functionality helps in managing your car's maintenance status. ### Does RSiAJP offer alerts for critical engine parameters? Absolutely. You can set custom alert and warning thresholds for individual data items. These are displayed through color coding on the gauges, and you can enable voice and sound alerts for active notifications. ### Is RSiAJP available on Android devices? Based on the provided data, RSiAJP is supported on iPhone, iPad, and iPod. There is no information indicating Android compatibility. ### How often is RSiAJP updated? The latest version of RSiAJP is 1.7.1, last updated on May 15, 2026. This indicates a recent update, suggesting ongoing development and support for the application. ### What is the price of RSiAJP? RSiAJP is a paid application, priced at $22.99. This one-time purchase grants access to all its diagnostic and monitoring features. ## Version history (last 5 releases) ### 2.2.0 — 2026-08-17 Fixes a bug where the warn and threshold alert values weren't always saved Interval gauges now have warning and threshold ranges Live ECU Graphs Oil pressure display ### 2.0.3 — 2026-08-06 Updated icon, and tyre size persistence ### 2.0.2 — 2026-08-06 -Allow widgets to overflow screen sides in layouts -Empty widget title set in designer removes widget title in the app, displaying only the value -On screen and audible alerts -Dynamic rpm limits based on water temp -Preview layouts in the layout designer ### 2.0.1 — 2026-07-31 This is a complete rewrite of the application with a new look and feel and the ability to design your own screen, either in the app itself or using an online designer available at https://rsiajp.com ### 1.7.1 — 2026-05-15 More forgiving timeouts and flashing status to indicate app is querying the bluetooth device ## Apps similar to RSiAJP | App | Rating | Price | Category | | --- | --- | --- | --- | | [Swift Command 2019](https://appshunter.io/ios/app/swift-command-2019/id1439084067) | — | Free | Utilities | | [MAP Energy](https://appshunter.io/ios/app/map-energy/id6756628340) | — | Free | Utilities | | [Polar-ESS](https://appshunter.io/ios/app/polar-ess/id6478309215) | — | Free | Utilities | | [VBOX Multi-Stopwatch](https://appshunter.io/ios/app/vbox-multi-stopwatch/id1558145568) | — | Free | Utilities | | [Rider Phone](https://appshunter.io/ios/app/rider-phone/id1513588906) | 2.0 (1) | Free | Utilities | | [D4H Personnel & Training](https://appshunter.io/ios/app/d4h-personnel-and-training/id1456365440) | 3.0 (11) | Free | Utilities | ## More apps by Grenat - [RSiAJP Lite](https://appshunter.io/ios/app/rsiajp-lite/id1240448529) - [RAW / BARF Pet Dinner](https://appshunter.io/ios/app/raw-barf-pet-dinner/id1343107452) All apps by Grenat: https://appshunter.io/developer/1234725484 ## Related topics [rsiajp](https://appshunter.io/ios/topics/rsiajp) · [rsiajp lite](https://appshunter.io/ios/topics/rsiajp-lite) --- *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.*