Enhance your 1998.5-2002 24V Cummins diesel engine's performance with on-the-fly adjustments. Fine-tune fueling, accelerator pedal response, and timing for significant power gains.
Comp 2.0 by Holley Performance Products





10+ similar apps compared and reviewed
Whether you want more options like FassConnect or a completely different take on the same concept, our curated list of 10+ similar apps has you covered. Updated for 2026 with the latest ratings and comparisons.





Enhance your 1998.5-2002 24V Cummins diesel engine's performance with on-the-fly adjustments. Fine-tune fueling, accelerator pedal response, and timing for significant power gains.






Monitor, diagnose, and update your vehicle's software remotely. This powerful tool allows you to view live data, read and clear diagnostic codes, and record data for your technician. Connect directly with your mechanic for remote assistance and software updates, saving you trips to the repair shop.





This app allows users to customize and control various Dakota Digital automotive and motorcycle systems. It offers extensive options for gauge colors, calibration, sensor data, and accessory setup, enhancing vehicle diagnostics and personalization.


Control your vehicle's performance with this app. Monitor real-time engine data with the iDash Pro and enhance throttle response with PedalMonster. Customize acceleration and safety features for a better driving experience.


Manage your air spring system directly from your smartphone. This app offers wireless control over your on-board compressor, allowing you to adjust air pressure with ease. Compatible with specific 2nd-generation WirelessAir systems.


This application allows users to receive custom vehicle tunes from their tuner via a compatible TDN delivery device. It facilitates the transfer of performance tuning files directly to your vehicle's tuner. A specific TDN-compatible hardware device is necessary to use this service.


This application allows users to read and view information about the on-board network of Ford, Mazda, Lincoln, and Mercury vehicles. It supports various OBD adapters and displays diagnostic trouble codes for all modules.


This app allows users to wirelessly control their Air Lift WirelessOne on-board air compressor system. It is compatible with specific 2nd generation WirelessOne systems.


Transform your phone into a powerful car diagnostic tool with this app. It offers comprehensive system scans, full OBDII functionality, and specialized maintenance services for a wide range of vehicle brands. Easily identify issues, access repair data, and generate detailed reports wirelessly.


Transform your phone or tablet into a powerful vehicle diagnostic tool via Bluetooth. Access full system diagnosis, OBDII functions, bi-directional controls, and essential maintenance services for a wide range of car brands. Generate detailed diagnostic reports for efficient troubleshooting.