CGR-30P Engine Monitor – Premium

  • Primary Replacement STC’d, TSO’d & PMA’d
  • 3 1/8″ Flush Mount
  • Replace Your Tachometer (RPM, EGT/CHT) And 5 Additional Primary Functions Of Your Choice.


Every package is custom built to your POH/AFM. Please allow for longer than normal lead times.



Interested in CGR-30 Combo? Click Here

FAA Approved Primary Replacement

  • Primary Replacement STC’d, TSO’d & PMA’d
  • Remove your old engine instruments, including RPM, Manifold, EGT/CHT, Fuel Level, Oil Pressure and more!
  • Upgrade your aircraft panel with the best engine analyzer available.

Easy To Install

  • CGR-30P fits into your existing 3 1/8″ hole (remove your old tach).
  • Engine Data Converter (EDC) accepts all inputs. Only 2 wires run to the back of the instrument.

Accurate, Dependable & Easy To Use

  • Electronics International consistently has been a leader in digital engine instrumentation since 1979.

Data Recording of Every Flight

  • All monitored functions are stored up to three times per second.
  • Up to 1,500 most recent flights stored, downloaded via a USB port.
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CGR-30P Main Screen

The Main Screen displays the Tachometer and Fuel Flow in large analog arcs at the top of the instrument, providing immediate and quick reference values. The digital display provides accuracy in monitoring engine functions.

The CGR Main Screen also features a complete, primary replacement EGT/CHT Bar Graph Engine Analyzer. Each cylinder is monitored by the CGR. If any EGT or CHT temperature rises above or below programmed limits, the CGR provides an immediate alert. The EGT/CHT Bar Graph Analyzer features both Lean-of-Peak and Rich-of-Peak Modes for easy engine leaning. The CGR-30P will let you know as each cylinder peaks, at what temperature each cylinder peaks, and how far below Peak Temperature each cylinder is operating.

To the right of the EGT/CHT Bar Graph Analyzer, the CGR-30P displays Fuel Remaining, Volts, and OAT.

EGT/CHT Bar Graph

The CGR-30P features a state-of-the-art, full-color bar graph to assist with ROP/LOP leaning. Additionally, the bar graph provides both “normalized” and digital readout screens. No other bar graph in the industry comes close to providing the number of options the CGR-30P offers.

Standard Bar Graph

Normalized Mode

Normalized Mode

(showing abnormal EGT #5)

The Bar Graph can be easily “Normalized” to create a baseline from which to monitor in-flight engine temperature changes. When Normalized, all EGT or CHT bars will be displayed as equal in height. If any cylinder’s EGT or CHT changes in relation to the other cylinders, that cylinder’s bar height will no longer be shown at the same height as the others. Such information can be an essential indicator of engine problems.

Digital EGT View

It’s easy to switch from the Bar Graph Display to the Digital View of your engine, which shows either all of your engine’s Cylinder Head Temperatures or all of its Exhaust Gas Temperatures.

Digital CHT View

Easy To Use Leaning Mode

Lean-of-Peak Mode

For Lean-of-Peak Operations, the CGR-30P informs the pilot as each cylinder peaks, at what temp each cylinder peaks, and how far from peak temp each cylinder is. For quick reference, every cylinder’s peak information is constantly displayed and “tattletale bars” are shown above each cylinder, indicating where each cylinder peaked.

Fuel Flow is displayed during the entire leaning process to assist in finding the optimal fuel-to-air mixture.

Rich-of-Peak Mode

The number of degrees below Peak EGT is displayed on the first cylinder to Peak.

Fuel Flow is displayed during the entire leaning process to assist in finding the optimal fuel-to-air mixture.

Secondary Screen

The Secondary Screen is intended to display functions which do not need to be displayed continuously. This Screen will display a red (warning) and/or yellow (caution) numerical value for a Primary Function of your choice. This function will also annunciate between the arcs on whichever Screen you’re viewing if a limit is violated. The red and/or yellow range annunciators directly under the arcs on the Secondary Screen will blink to alert the pilot of any potential problem with a primary function on the Main Screen.

Fuel Management & GPS Interface

Fuel Screen
Estimated Used