Hot Tach II

The Hot Tach II sets the stage for the Hot Tach III and Hot Tach Pro. It is the foundation upon which the other two are built. This 2 7/16” square faced gauge is capable of displaying multiple functions on its LCD screen. These functions include engine RPM and two exhaust gas temperatures. In addition to displaying these functions it is also possible to set alarm levels on each of the channels. A warning light will flash whenever a maximum level is exceeded and any channel. Viewing the RPM and EGT data is accomplished by scrolling through the channels on the screen. This is done using the button on the gauge, or an optional remote thumb switch.

Data displayed on the Hot Tach II can also be recalled and played back after the engine has been shut down. Up to six minutes of recall/playback is available.

Hot Tach III

The Hot Tach III is very similar to the Hot Tach II. It shares all of the same features, the only difference being the number of temperature channels it can support. Where the Hot Tach II could handle two, the Hot Tach III can accommodate up to three temperature channels

Hot Tach Pro

The Hot Tach Pro incorporates all the functions of the Hot Tach II and III above but offers the capability to monitor up to four exhaust gas temperature channels and a second RPM, such as a jackshaft or driveshaft. Additionally, these gauges can be configured for a mixture of EGT and pressure or temperature sensors. Example you could monitor 3 EGT’s and a water temperature, or 2 EGT’s and 2 pressure sensors.

The Hot Tach Pro allows you to establish warning levels on all monitored channels
Like the other Hot Tach models, the Pro version can perform recall and playback on the gauge’s screen. Recording time for playback can vary from 5 1/2 minutes to 18 hours depending on which of the twelve sample speed rates you choose. Sample rates up to 40 times per second are available. Also incorporated is a pause feature that temporarily halts the recording when the engine RPM dips below a predetermined speed, then resumes as soon as the RPM rises again.

And if the above features aren’t impressive enough, the Hot Tach Pro has the ability to upload the recorded data to a PC or laptop for analysis. By purchasing the Download Kit, which includes an optic adapter and the renowned DataLink Lite data analysis software, you can display all recorded data on your computer screen in graph and numeric format. This will allow you to track your tuning changes in relationship to both engine RPM and a time line.