Using Third Party Displays & Data Loggers With MegaSquirt

MegaSquirt works with many popular 3rd party dash devices & loggers

Last updated 3/3/2016: Racepak devices are now in stock!

There’s no shortage of drop in digital dashes, data logging units, and other displays on the market for race cars that are designed to get their data from the engine management system. A growing number of them support MegaSquirt. Here, we present a roundup of units known to work with the MegaSquirt, as well as various smart phone and tablet apps that provide a similar function.  If you know of one that works with MegaSquirt that we didn’t list, send us an email and we’ll get it added.  If you are a programmer looking for the information needed to add MegaSquirt support to your data logging system, you’ll also find it here.

All the entries are in alphabetical order.

Data loggers and dashboards

AiM Sports

AiM’s popular MXL and MyChron devices now support MS1, MS2, and MS3 if you are running the latest firmware and Race Studio version.  MS1 connects over serial, while MS2 and MS3 use CANBus. You do not need any specific hardware – just connect the wiring harness provided by AiM Sports to the appropriate points on the MS.


MS2 (firmware 3.4.x and newer)  and MS3 (firmware 1.4.x and newer) are compatible with Racepak VNet via the RACEPAK-CAN interface module, or on some newer models It uses the simplified dash broadcasting mode — section 1 of this pdf shows what fields are transmitted and how to set up the MegaSquirt to broadcast the data:

We carry the following RacePak items:

Race Technology

Race Technology dashes use the CANBus wires to connect to MS3 and MS2. Works with MS2/Extra 3.3.2 and higher, and MS3 1.3.1 and higher release codes. You will need to get the CAN bus option from Race Technology.


Smartphone and Tablet Apps

mobiSQUIRT (iPhone)

mobiSQUIRT is available for the iPhone and iPad.  Current versions support MS1 and MS2, with MS3 support planned.  Connecting to MegaSquirt requires a serial to WiFi adapter.

Shadow Dash (Android)

Shadow Dash at EFI Analytics

The latest smartphone program from Phil Tobin at EFI Analytics. As the name implies, this permits using a phone or tablet as a dash display. This one has a TunerStudio-style dash display, data logging, and can also load and save tunes, so you can carry around tunes for different fuels or different setups in your phone without using a laptop. Connecting to MegaSquirt requires a BlueTooth adapter.

Shadow Logger (Android)

Shadow Logger is an Android logging program from Phil Tobin, the same programmer who brought you TunerStudio and MegaLogViewer.  It supports MS1, MS2, and MS3.  Connecting to MegaSquirt requires a serial to Bluetooth adapter. Note that Phil also has a newer program out, Shadow Dash (above).

MSLogger (Android)

MSLogger is now merged with MSDroid, below.

MSDroid (Android)

Download at Google Play

MSDroid is a display, logging, and tuning program that suports MS1, MS2, and MS3.  Can use Bluetooth or USB.

Developer information

MS1 has just one communication method available, an RS232 port. Click here for MS1/Extra serial documentation.

MS2 (including the MicroSquirt, DIYPNP, and MSPNP Gen 2) supports both RS232 communication and CANBus. There are two CAN modes available:

The 11 bit CAN broadcasting protocol is also available in a DBC file, for devices that use this for interface development.

Current laptop tuning software uses RS232 exclusively, so a CAN based display device would be able to keep running with a laptop connected, while an RS232 based one would not.

MS3 is very similar to MS2, and uses the same RS232 protocol as the current MS2/Extra. Like MS2, it also uses CANBus, using the Extra protocol.