The Longacre Digital Air Density Gauge will help keep your engine running at its peak horsepower.
Accurateelectronic Air Density measurementwith easy-to-read digital display
Shows your baselineso you don't forget
ARed LEDflashes to let you know if you need to change jets (air density changed by +/- 5%)
Also displays currenttempandbarometric pressurewith the push of a button
Battery indicator on display
Foam lined silver carrying case included
Air density or RAD (relative air density) is used as a valuable tuning tool to keep your jetting at its optimum. To use this gauge get a box of spark plugs and work on your jetting, reading the plugs as you go.
When you get the motor just where you want it, record the air density or set the baseline on the digital air density gauge. Later, which could be today, tomorrow, next week or next month, if the air density changes, you will instantly know how much to re-jet to keep that peak. Air density will almost always change, so having that baseline will be key to keeping your engine running at its peak performance.