In Focus: ESI EZ Tach +Plus Automotive/Small Engine Tachometer

Electronic Specialties’ EZ-Tach +Plus Digital Tachometer, No. 328, is a wireless and inductive tachometer that gives easy RPM readings (from 0 RPM to 20,000 RPM) for setting idle speeds and tuning a variety of engines from string trimmers to automotive.


Just clamp the pickup on a spark plug wire and get engine RPM. EZ Tach +Plus is a compact instrument and handy for setting idle speeds and tuning. EZ Tach +Plus can be used wireless by placing the instrument near any spark plug wire, ignition coil or distributor. EZ Tach +Plus features a built-in LED flashlight, which can be used to illuminate the working space. The tool can measure engine revolutions up to 20,000 RPM on both two- and four-stroke ignitions. Readings are easily viewed on the backlit LCD display.

Applications include: Outboards, snowmobiles, motorcycles, small engines, generators, lawn equipment, ATVs, automotive and more.


Electronic Specialties has been building hand-held service tachometers for more than 30 years. The EZ Tach +Plus is in response to inquiries for a good tach at a reasonable price. Designed this item with some of the best features and kept the price reachable for most. There are a large number of applications for this product, including setting idle speeds, generator speeds, adjusting carb jets, clutch engage speed and more.


• Manufactured in China to ESI’s engineering specifications.
• Reads 0 RPM to 20,000 RPM with accuracy of +10 RPM. Includes RPM pick-up.
• One year warranty.


This tach works on as many types of engines as possible. It has the ability to get accurate RPM readings on engines as small as string trimmers and chain saws on up to outboards and automotive. EZ Tach +Plus was designed for all engine types and can filter the extra EMI noise produced by small engine CDI ignitions. Multimeters and most other tachs were designed for automotive use and can’t read RPM well on small engines. Attention was paid to the screen update rate of the readings so that RPMs on unstable motors can be seen properly.




Steve White