I'm running my buddies 496 BBC w/ nasty Brodix heads and a roller cam and Imagine Injection 8 stack on the EZ EFI Multiport controller.
We switched over from the FAST XFI 2.0 when he went with the 8 stack.
The "tuners" hate these systems because there's no money in it for them... but if your motor is pretty "normal" - not the super huge lumpy cam etc... then they work great. If you have no vacuum at idle etc.. THEN you need a tunable system. My two motors - and this 496 were built with wide LSA (114* or so) cams = so they were built with EFI in mind. It makes a difference.
My cars start INSTANTLY --- and idle cold.... and they run like EFI motors should. None of these three even run IAC (idle air control). They just don't need it.
The other thing that I really like about this system is that you can just run a normal distributor etc. The EZ EFI only controls fueling... no timing. So for most of us this keeps the system simple and we can use our old skool carb/timing experience to get the motor in tune.
Just remember that there's a few things to learn about EFI -- and one of them is DO NOT run your MSD box or any of that wiring in a loom with the EFI stuff... If you do - you'll have all manor of nastiness going on. These need to be kept as far away from each other as you can get 'em -- boxes AND the wiring.
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