The NVH App
OPTIONAL: There is one optional tool, a Bluetooth datalink connector (DLC) interface.
You may need an optional Bluetooth datalink connector (DLC) interface for your vehicle depending upon what type of transmission you have. There are four main types of transmissions on the road today (Listed by popularity):
- Automatic Shifted Transmissions – A Bluetooth DLC interface tool is not needed, but it can speed up engine speed related vibration diagnosis. During diagnostics, the NVH app estimates engine RPM based upon your vehicle’s transmission gear ratios and the vehicle speed at which each shift takes place. Without a Bluetooth data link connection, the estimated engine RPM is only
accurate if you are maintaining a steady vehicle speed on a long, flat, road surface (Use cruise control where possible). Higher vehicle speeds typically give better results. For improved estimated engine RPM accuracy, adjust the “Shifting Speeds” for your transmission in the Settings Screen.
- Continuously Variable Transmission (CVT)* – A
Bluetooth DLC interface tool is needed to diagnose engine speed related vibrations. Diagnosing tire speed and driveshaft speed related vibrations do not require a Bluetooth DLC interface tool.
- Manual Shifted Transmissions – A Bluetooth DLC interface tool is not needed, but it can speed up engine speed related vibration diagnosis. Adjust the shifting speeds to match when you shift your transmission in the Settings Screen and you are ready to begin vibration diagnosis.
- Hybrid-Electric Vehicle Transmissions – A Bluetooth DLC interface tool is needed to diagnose engine speed related vibrations. Diagnosing tire speed and driveshaft speed related vibrations do not require a Bluetooth DLC interface tool.
*Subaru and Nissan use CVT transmissions in most of their vehicles. Almost all other vehicle manufacturers use a CVT in one or more of their vehicles. A CVT does not shift like a traditional transmission; however, many CVT vehicles use paddle shifters on the steering wheel to give the driver the illusion of actually shifting.
Vibrate 5.1 Software for Windows XP through Windows 10
Two tools are needed to effectively use Vibrate 5.1
- An engine RPM measuring device such as one of the following:
- An engine tachometer in the automobile or truck.
- An automobile scan-tool to read engine RPM from the engine data list. There are several aftermarket and vehicle manufacturer PC USB based scan tools available for anyone to purchase.
- A vibration frequency and amplitude measuring device such as:
- The J-38792 (old number), or J-38792-A or CH-38792 Electronic Vibration Analyzer (EVA-2)**. Watch this HD video about using the EVA with Vibrate 5.1
- A Briggs & Stratton Syrometer/tachometer part number 19200.
- This tool is difficult to use and limited in it’s frequency range, but it is less than $40.00 US. It can be ordered from Briggs & Stratton. Simply turn the dial to the expected vibration frequency and wait for the wire to vibrate. If it does vibrate, you have a frequency match.
Watch this HD video about using the Syrometer with Vibrate 5.1
- Any equivalent device that will read vibration frequency and amplitude.
The following tools have been discontinued, but can be found on eBay and other online sellers of used tools.
- The 014-00344 Electronic Vibration Analyzer (EVA)*.
- The OTC OT38793 (old number) or J-38792-A Electronic Vibration Analyzer (EVA)***.
- The Bosch (Formerly Vetronix) MTS 4100 Noise, Vibration and Harshness Analyzer ****
**For more information on the Kent-Moore J-38792-A EVA,