This article serves to inform potential users regarding making the decision to use Megasquirt as his or her choice for engine management.
- At the very least, Megasquirt can be used to control fuel only and nothing more. You
will throw a CEL or SES light if you make the move to Megasquirt as the OEM ECU will no longer see the presence of the fuel injectors. If your state requires emission testing this will create a problem for you unless you build a harness to switch back and forth from for emission testing purposes.
- Attempting a Megasquirt install necessitates the ability to read basic wiring diagrams and preferrably soldering versus crimp connections. If you have no knowledge in this area, source a friend that does.
- Megasquirt units require hardware modifications to properly decode the 420a crank signal. If you purchase an assembled Megasquirt unit that is not from a vendor that modifies it for the 420a, you will need to perform the modifications yourself. Refer below.
- Refer to the first link below to aid in making your decision about what kit to purchase based on your needs.
What Megasquirt version do I need?
Megasquirt - MS1 Extra
Megasquirt - MS2 Extra
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