Review on ⚙️ Digital Throttle Body Sync Tool - Digi Sync 4-Channel, Digital Carb Sync Tool, Vacuum Gauge (Digital Peaking Manometer) DS3 Model - Excludes Motion Pro Syncpro or Alpha Moto by Javarie Malick

Amazingly accurate, easy to use and easy to store. After years of using mercury tubes and then viscous fluid synchronizers, I discovered this. With my 4 port I can build any engine from 2 to 4 carburetors/chokes. There is no need to plug unused ports as it is self-configuring. There is no need to throttle the vacuum tubes to keep the sensors from jumping around. It also accurately reports RPM. In addition, the customer service is fantastic!