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Old 10-10-2019, 10:03 AM
EngineBridge EngineBridge is offline
Join Date: Mar 2019
Location: Chicago
Posts: 26

Firmware 1.4 is now available.

Download the firmware file along with the Update procedure PDF here:
PMag Controller HW V1.4

If the PMags & Controller connected to the same power switch (such as Master Switch) and are normally powered at the same time then no need to update to this version.

A note from a customer that his dual PMags are not normally powered with the Master Switch, while the controller is. This is so he can work on the airplane or avionics without the need to have power on the Mags.

The current version of the Controller searches for one min for one or two PMags then it enables Wi-Fi pages. If dual PMags are available, this takes a few seconds after power up. If one PMag found, or none are found, it tires for one min before enabling Wi-Fi. This means for this customer, he needs to restart the Controller when he powers the PMags to start the engine.

This update lets the Controller keep searching for PMags after the initial one minute timeout. It is recommended to power the PMags & Controller at the same time, but for those who have their PMags on a separate switch and usually power the Controller first then this update solves the need to Restart the Controller after powering up the PMag.
- EMag/PMag Settings Controller
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- Height Call out like the big boys down to 0 feet.
- Pump Pressure Controller
- Custom Speed Switch and Auto-Extend option
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Old 06-27-2020, 03:37 PM
Jim Ellis's Avatar
Jim Ellis Jim Ellis is offline
Join Date: Jul 2006
Location: Flower Mound, Texas
Posts: 135
Default EngineBridge WiFi Pmag Controller

I recently had the opportunity to upgrade my EngineBridge PMag Controller from the older Bluetooth model to the newer WiFi model.

The new updated Controller requires the connection of the Tx and Rx control leads from each PMag plus 12 volt power and ground wires into a 15 pin D-sub connector (standard density male pins).

In addition, I added two 22 awg shielded wires to pick up the 5 volt variable analog output from the EngineBridge Controller to my Garmin GEA 24 EIS. This would allow me to display the Timing Advance Angle of the PMags while running. These shielded wires were connected to pins 19 (GP1 / POS 1) and 20 (GP1 LO / GND) and pins 22 (GP2/ POS 2) and 23 (GP2 LO / GND) using standard density female sockets. The pins I chose are general purpose inputs (GP1 and GP2 on Connector 244) to the EIS that can be programed to display on the engine information page.

There are a total of seven general purpose inputs that can be used for displaying additional outputs from the Controller (Coil Dwell Time and Reported Temperature). The pin assignments for these inputs are shown on page 26-37 of the ?G3X Touch Installation Manual, Rev AM?.

I mounted the small Controller box behind the panel on the right side with Velcro on the flat triangular sub-panel brace.

After all the connections were made, I powered the panel and chose ?SETTINGS? on the iPad and selected the WiFi output from the Controller. After entering the supplied password and the IP Address in the browser, the main screen appeared on the iPad.

I checked each of the optional screens and confirmed that the stored ignition settings in the left and right PMags were correct.

To program the EFIS to display the Timing Advance Angles, I followed the instructions in the ?G3X Touch Installation Manual, Rev AM? on page 35-181. You need to open the GDU 46X, PFD in Configuration Mode by holding the Menu button during power on and select the Engine page. Scroll down to the General-Purpose Inputs and enter the name associated with the input. (I used ?LEFT ADV DEG? and ?RIGHT ADV DEG?.) Enter the recommended minimum and maximum timing values (18.0 and 48.0) and enter the calibration curves for each of the inputs. You can add color coding and tick marks if desired. Save and exit the Configuration Mode.

After re-booting you will see two bar graphs on the engine page that show the current real-time degrees of advance for each of the PMags. You should expect them to match each other at all times unless something has gone awry.

I was very pleased with the results. The WiFi connection seemed to be faster and more stable than the previous Bluetooth connection. The information displayed on the iPad appeared somewhat small but the graphics were obviously designed to be displayed on an iPhone instead of the larger iPad. You can enlarge the graphics on the iPad if you wish by using two fingers.

The entire installation could be accomplished in a single day. If starting from scratch you would need about 18 feet of two conductor 22 awg shielded wire for the PMag connections and about 14 feet of single conductor 22 awg wire for each pair of the analog outputs you wish to connect to your EFIS. Use un-shielded 22 awg wire for power and ground wires as needed to power the Controller.

Re-setting and sending new values to the PMags is simple and easily done using the Controller screen that is nearly identical with the one from the older Bluetooth model.

The EngineBridge people have done a very nice job in improving upon an already excellent control system for PMag ignitions. A special thanks to Nidal Robb who answered a multitude of emails that kept me on the right track.
Jim Ellis

RV-7A, N23VC, Slider, Garmin G3X Touch Panel,
Barrett Precision Engines Superior XPIO-360,
Dual P-Mags, Airflow Performance FM200A,
Classic Aero Designs Interior,
GLO Custom Aircraft Paint,

RV-9A N155T, Sold
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Old 01-04-2021, 03:16 PM
VMA542 VMA542 is offline
Join Date: Aug 2015
Location: Yuma, AZ
Posts: 2
Default New E-Mag Install


I just finished a twin E-Mag install after years of reading about electronic ignitions. Based on the research, I wanted to control the timing and am extremely satisfied with Nidal's Engine Bridge! Nidal was exceptionally responsive to my questions throughout the installation.

Anyone who is interested in this set-up should read the Nigel Speedy Kitplane article titled: The Effects of Ignition Advance on Cylinder Head Temperature, Speed and Efficiency. All of this has been thoroughly discussed in various threads before! After (7) test flights I gained a repeatable 2-3 KTAS (Best Power) 8k DA with ignition advanced from placard 20 BTDC to 23.8.
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