Megasquirt-1 offers a cost effective entry level to the aftermarket ECU market. Coupled with an EDIS module, the Megasquirt-1 V2.2 was cheap but gave mappable spark and fuel. For direct coil control (non-EDIS) the Megasquirt-1 V3.0 is still a cheap and simple ECU. As expected Megasquirt-1 lacks many of the features of the newer ECUs. Few OEM wheel patterns are supported, temperature sensor and wideband calibration is more tricky and there are fewer diagnostics. All features require DIY modifications to the circuit board.
The processor used within the Megasquirt-1 is now obsolete and will become unavailable once supplies are exhausted.
It is strongly recommended that you consider Megasquirt-2, Microsquirt or Megasquirt-3 products instead.