While the installation is not quite done yet, I have seen the unit in my aircraft with the engine running and the monitor producing numbers. It looks very good and I cannot wait to go flying with it!
- CGR-30P Basic Engine Monitor
CGR-30P Basic Engine Monitor

FAA Approved Primary Replacement
- Primary Replacement STC’d, TSO’d & PMA’d
- Remove your old engine instruments, including RPM, EGT/CHT, Fuel Flow, Volts, OAT!
- 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.
Product Overview
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.
Fuel Management & GPS Interface

Fuel Screen
Estimated Used

Fuel Screen
Estimated Time

Fuel Screen
Estimated at Destination

Fuel Screen
Fuel Flow
Fuel Management
- Displays ‘Estimated Fuel Remaining Based on Fuel Flow’.
- Displays ‘Fuel Used for Flight’ and ‘Since Last Fill-Up’.
- May enable you to extend your flight time using a number of fuel management tools.
GPS Interface
- Ties into panel or yoke-mounted GPS.
- Displays distance and time to empty.
- Stores GPS data in its recorded flight log.
The Fuel Data Screens provide six sets of data based on Fuel Flow and GPS information. This data includes Range, Distance to Destination, Range After Reaching Destination, Fuel Remaining, Fuel to Destination, Fuel Reserve, Time to Empty, Time to Destination, Time Reserve, Fuel Used for the Flight, Fuel Used Since Fuel Was Added, Economy (MPGs) and Total Fuel Onboard. Much of this data depends on an RS232 connection to your GPS.
Data Recording

- Records all functions, every flight, up to 3 times per second.
- See potential issues before they become major problems.
- Quickly download data with a USB flash drive.

This screen allows you to download Flight Data to a USB flash drive and set the Data Sample Rate. The Data Sample Rate is the time interval between recorded data. The CGR-30P can record up to 1500 flights before it records over the oldest flight first. The USB port may be found mounted in the instrument panel or hanging under it. Flight Data is recorded and downloaded in a comma delimited format. This allows the file to be ported directly into Excel.
Prices
CGR-30P Basic Package Retail Prices
Pricing Starting At $3,398
Included: RPM, Fuel Flow, EGT/CHT Bar Graph, Fuel Remaining, Volts, OAT, Tach Time, Local Time, Zulu Time, Flight Timer, Fuel Used, GPS/Fuel Flow Data, External Caution & Warning, and Data Recording.
CGR-30P Basic Packages
(prices include probes & cables)
Every package is custom built to your POH/AFM. Due to increased demand, lead times can be five or more weeks. Limited rush orders (AOG) are available. Please contact EI for current lead times, rush availability and pricing.
Description
Package
Retail Price
4-Cylinder Basic Package
CGR-30P-4-B
$3,798
6-Cylinder Basic Package
CGR-30P-6-B
$4,598
7-Cylinder Basic Package
CGR-30P-7-B
$5,448
9-Cylinder Basic Package
CGR-30P-9-B
$5,498

CGR-30P Basic UPGRADE Packages
(without probes & cables)
HUGE installation savings!
Use existing probes, cables and flow transducer with our upgrade packages when you trade in your current Engine Analyzer and Fuel Flow instrument.
Every package is custom built to your POH/AFM. Due to increased demand, lead times can be five or more weeks. Limited rush orders (AOG) are available. Please contact EI for current lead times, rush availability and pricing.
Description
Package
Retail Price
4 or 6-Cylinder Basic UPGRADE Package (requires a trade-in engine analyzer to receive this price)
CGR-30P-B-A
$3,498
4 or 6-Cylinder Basic UPGRADE Package (requires a trade-in engine analyzer and fuel flow computer to receive this price)
CGR-30P-B-AF
$3,398
To see more information on upgrade packages visit our UPGRADE page.
Specifications
CGR-30P Specifications
Dimensions
3.25″ x 3.25″ x 4.45″ Deep, 3 1/8″ Flush Mount
Weight
1.1 Pounds (Instrument Only)
Power Requirements
7.5 to 30 Volts, Typical: 0.2 amps @ 12 Volts
Display
Active Matrix, Sunlight Readable
Backlight
Fully Dimmable for Night Flights
USB Port
Data Download and Software Updates
Internal Storage
Up to 1,500 most recent flights stored. All monitored functions are stored up to three times per second. Recorded flight data can be easily downloaded via USB port.
Certifications
- FAA STC’d as Primary
- Replacement
- FAA TSO’d to DO-160G
- FAA DO-178 Level C
- Transport Canada Civil Aviation (TCCA) Validated STC
- European Aviation Safety Agency (EASA) Validated STC

Engine Data Converter (EDC-33P) Specifications
Dimensions
5.85″ x 3.71″ x 2.35″ Deep
Weight
1 Pound (Instrument Only)
Power Requirements
7.5 to 30 Volts, Typical: 0.1 Amps
Certifications
FAA TSO’d to DO-160G and DO-178 Level C
Available Channels
1 Volt Channel, 1 Amp Channel, 1 Fuel Flow Channel, 6 Pressure Channels, 17 Temp Channels, 4 Resistive Fuel Level Channels, 4 Capacitive Fuel Level Channels and 2 RPM Channels

Videos
CGR-30P Videos
CGR-30P Engine Monitor Overview
CGR-30P Screens Overview
CGR-30P Bar Graph Overview
CGR-30P Installation Time Lapse by Sarasota Avionics
CGR-30P HOW-TO: View Tach or Engine Time
CGR-30P HOW-TO: Set Tach Time
CGR-30P HOW-TO: Set Local, Zulu or Date
CGR-30P HOW-TO: Set K-Factor
CGR-30P HOW-TO: Set a Differential Alarm
CGR-30P HOW-TO: Set a Default Full Tanks
CGR-30P HOW-TO: Program a Recurring Fuel Alarm
CGR-30P HOW-TO: Normalize the Bar Graph
CGR-30P HOW-TO: Download Flight Data
CGR-30P HOW-TO: Change Data Recording Sample Rate
CGR-30P HOW-TO: Change Bar Graph Scan Rate
CGR-30P HOW-TO: Add Fuel to Fuel Totalizer
Documents
Documents & Manuals
Testimonials
Customer Testimonials
Good support when we called with particular questions with the initial setup. We liked the functions and the price.
I like the 3.125″ format. Plus there are no hidden costs of probes you have to buy later…
- Customer
Anthony H. from Oregon
- Aircraft
Piper PA-18 Super Cub
- EI Instrument
Customer Service is far superior… with an excellent record of resolving … technical issues.
- Customer
C.J. R. from North Carolina
- Aircraft
Mooney M20C Ranger
- EI Instrument
Very affordable… great installation instructions. [I chose EI because of its] price point, certified primary.
- Customer
Benjamin T. from South Carolina
- Aircraft
Piper PA-28-181 Archer II
- EI Instrument
People [at EI] were great to work with.
- Customer
Andrew & Carri Ann M. from Alaska
- Aircraft
Piper PA-18-150 Super Cub
- EI Instrument
Outstanding support. From the friendly demeanor of whoever answers the phone to all the way to [their sales representative]. Your CGR-30 series is superb.
Awesome Product! Great product and fantastic support!
- Customer
David B. from Texas
- Aircraft
Cessna 182Q Skylane
- EI Instrument
Excellent Service. Superb Product.
- Customer
Steven N. from Colorado
- Aircraft
Cessna 182E Skylane
- EI Instrument
Very impressed with the clarity and readability of the CGR-30P gauge.
- Customer
Richard K. from New York
- Aircraft
Piper PA-28-181 Archer III
- EI Instrument
Easiest company to deal with and an awesome product! Price, Certified for Primary, and Features.
- Customer
Justin E. from California
- Aircraft
Piper PA-30 Twin Comanche
- EI Instrument
[I chose EI because of its] Reputation and value.