Welcome to your source for efi components. EFI Source is dedicated to supplying the highest quality EFI products to the performance minded automotive community. Our goal is to make programmable EFI systems affordable to everyone without sacrificing quality or functionality. We will constantly be adding new products in order to meet this goal.
Efi Source has decided to give LSX fans the best of both worlds ! We are now offering our LS1 24x modified MicroSquirt ECU in a complete Plug and Play package. This is the ultimate “bare bones” Plug and Play package for those who only need to control fuel and timing and do not need […]
The EFI Source MS3 Gold Series plug and play ECU for LSX series motors is the most complete and cost effective system available on the market today. The Gold Series comes complete with a plug and play harness and a factory installed base tune. Simply connect a power, ground, and switched 12v and you will […]