” If you have invested a lot of money into a engine program (which most of us do), it is a very good idea to protect that investment with an actual working fault management system, backed by hardware that will take a beating like no other. To me, it is a no brainer! Another good point to consider is the add ons, by the time you factor in an external wide band controller, knock management, boost control, Flex Fuel, etc… to go with one of the other systems on the market, you could have simplified your life exponentially by going with PROEFI. This system does it all.”