MegaSquirt 2 Programmable EFI Engine Management System PCB3.0 Kit by DIYAutoTune 24 MHz HCS12 processor MegaSquirt 2 Ignition control Built-in rev limiter, either 'fuel cut' or 'spark retard Free tuning software allows for real time tuning and data logging for later analysis Built in 2.5 bar MAP sensor reads up to 21 psi of boost