[olddog]

I like to watch the burnouts at the London car show in Ohio. You always see some cars that a hard launch sloshes the fuel away from the jets. You also see some running so rich they look like a diesel going down the street. Definitely carbs have real issues.

EFI also has some real issues. Cost. Finding a tuner your comfortable with. Cost. Alternatively, learning to tune it yourself. Cost. Deciding what system to buy. Did I mention cost?

Speed Density doesn't play well with cams that give low vacuum at idle. Alfa-N can handle it, but is much more difficult to tune and is typically a compromise that is slightly better than a carb. Mass flow is the best in my opinion, but typically they are an ugly sight. The MassFlow system does manage give you a mass flow system with a decent look at a reasonable price - I have one.

The early MassFlow systems used a stock EEC4 computer. The new ones come with a chip that they tune based on what you tell them your engine specs are. They get it pretty close and from what I hear run good enough for most people. It is my opinion the more radical the engine, the less likely the Ford timing and fuel maps are going to be ideal. So I think most people are going to want to tune it for their engine.

Bottom line what ever you use, if you cannot tune it yourself, you need to find someone who actually knows what they are doing. Good luck. Most dabbling idiots think they know it all, and charge just as much as a true expert. I have no idea how to determine which is which until after paying them to do work.