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kevin lane wrote:
I still never got an answer to my original question; how much more power comes from EFI vs. carb? or is it a case that efi is just better tuned at all rpms since it has so many easily controllable parameters? does efi produce an optimum mixture and finer fuel droplets that can't be matched by the carb? if it does produce more complete burning and efficiency, how much? I hear these type stmts, but never numbers. are we talking 5%, 10%, 20%? kevin (renesis in my future :-)
http://www.popularhotrodding.com/enginemasters/articles/hardcore/0305em_holley/
skip down to "What did we learn?"
Point of interest and it should be kept in mind for any comparison is how "well-tuned" the components are. The article writers appear to be professionals, and yet even they had to swapped several components on both type of systems to get maximum performance. Lynn could probably make a carb outperform most other's EFI on a particular race day. Give me another 6 months of study with this EFI, and I might be able to give him a run for his money, though*.
Another point is that I keep reading "Carbs are simpler. You just have to bolt it on and go." Well, yeah. That's true, IF you want to leave a lot of performance on the ground. Once you start talking about getting all the performance out of the engine, especially if you want to accomplish that over a large range of environmental conditions, then the carb starts getting VERY complicated. Most people are oblivious that all that complication even exists and will opt to just take what they get, power-wise, or bolt on another 'simple' carb. If there is an improvement, they'll tell everyone the old carb sucks and the new one is the cat's meow, and at no point will they consider they haven't a clue. I'm not trying to say EFI is simple, just that a carb is more forgiving of cluelessness.
Ernest (nearly oblivious, but trying to improve)
*Heh, stranger things have happened!
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