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MUX-8A Upgrade to BC-5R
Upgrade from the MUX-8A to the BC-5R
- Record data from newer EI instruments, including CGRs and MVPs.
- Configure to interface with 7 E.I. and 1 GPS instruments.
- Consolidate data into a single, time-stamped view of engine performance.
- Download & monitor large amounts of data effortlessly via a USB memory stick.
- Analyze data easily in a simple CSV spreadsheet format.
- Export information into graphs to see & analyze trends.
- Enjoy greater flexibility with fully customizable options.
- Access a comprehensive overview of your engine’s health.
- Easily identify & prevent problems to save money on costly repairs.
- Fly safely and with confidence.
Product Overview
BC-5R Overview

The BC-5R is a multifunction Data Recorder, designed to record data in five categories. The BC-5R is encased in a 3.80″ x 2.64″ x 1.6″ gold-plated enclosure. The BC-5R can be mounted under the instrument panel or in an equipment bay. It comes equipped with a USB cable and data stick for accessing stored data.
Time Stamps:
The BC-5R incorporates an internal clock that is used to Time Stamp each row of data as it is recorded.
Event Lines:
The BC-5R is capable of monitoring up to three Event Lines. These Event Lines are normally used to mark data for flight testing.
Bus Voltage:
The BC-5R monitors and records bus voltage to the instrument.
Engine and Aircraft Data Recording (Channels 1–7):
The first seven channels of the BC-5R are configured to interface with Electronics International’s (E.I.’s) engine/aircraft instruments.
GPS Information (Channel 8):
The eighth channel of the BC-5R can be used to monitor GPS data. This is normally Moving Map, Aviation or NMEA data. The data records are Next Waypoint Name, Latitude, Longitude, Ground Speed, Altitude and Track. If this channel is not used to monitor GPS, it can be configured to monitor an additional E.I. instrument.
Visual Status Indicator (VSI):
The Data Recorder is equipped with a multi-color LED designed to display the system’s operational status through various colors.
Data Recording Examples
Step One:
Download data onto USB memory stick
Step Two:
Download data from USB memory stick to spreadsheet
Step Three:
Export data into easy-to-read graphs to see trends & potential issues
Conclusion:
Prevent costly maintenance issues & invest in flight safety by using E.I.’s BC-5R’s powerful engine analysis capabilities.
Prices
Retail Prices
Packages include:
- 1 BC-5R Data Recorder Package
- 1 BC-5R & MUX 8A Replacement Harness
- BC-5R Upgrade from MUX-8A Installation Instructions
BC-5R Data Recorder
BC-5R MUX-8A Replacement Harness

BC-5R & MUX-8A Replacement Harness
Description
Package
Retail Price
BC-5R MUX-8A Replacement Package
BC-5R-MUX-8A-Replacement-Pkg
$648
Specifications
Specifications
Dimensions
3.88″ L x 2.65″ W x 1.80″ H
Weight
0.6 Lbs
Power Requirements
7.5 to 40 Volts
0.025 Amps at 24 Volts
Certifications
FAA-Approved
Input Lines 1–7
- Receives an RS-232 signal at baud rates of 9600, 19200, 38400, and 57600
- RS232 or UART Format: 8 data bits, 1 start bit, no parity, can be either normal or inverted polarity
- Data must be terminated with a carriage return (oDh) line feed (OAh)
Input Line 8
- The eighth channel of the BC-5R can be used to monitor GPS data. This is normally Moving Map, Aviation or NMEA data. The data records are Next Waypoint Name, Latitude, Longitude, Ground Speed, Altitude and Track.
- If this channel is not used to monitor GPS, it can be configured to monitor an additional E.I. instrument.

Videos
Product Videos
Documents
Documents & Manuals
Testimonials
Customer Testimonials
Nice Instrument, all the electrical information I need in one place. [I chose EI for its] performance and price.
- Customer
David C. from the United Kingdom
- Aircraft
Scottish Aviation Bulldog
- EI Instrument
Very accurate readings! The “analog” style LED arc means at-a-glance tach readings that allow the pilot to keep his attention where it matters, not reading a gauge. The digital readout is great for maintenance checks and mag drop tests.
- Customer
David K. from New Mexico
- Aircraft
Cessna T20N Turbo Centurion 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
Great product. So easy to read compared to the originals.
This is a high quality instrument and works perfectly. Well designed, well constructed and well documented. I couldn’t be more pleased!
Simple and Easy.
- Customer
Aaron H. from Washington
- Aircraft
Cessna 140
- EI Instrument
I was able to try out the CGR-30P in a flight school plane. I was very impressed with the ease of use, visual quality, and information provided on the main screen… I feel it will pay for itself in fuel savings, and extended engine time before overhaul.
- Customer
David M. From South Carolina
- Aircraft
Cessna 182J Skylane
- EI Instrument
I have seen your products in other aircraft and have seen their reliability.
- Customer
Juan P. from British Columbia, Canada
- Aircraft
Cessna 172M Skyhawk
- EI Instrument
You folks do a great job. Keep up the good work.
- Customer
Kevin D. from Missouri
- Aircraft
Cessna 172 Skyhawk
- EI Instrument
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!
Installed digital volt/amp gauge in PA 28-181. Great unit easy to install. Much better than original.