Originally Posted By Wildjones


Can anyone tell me if the CFM of a TBI EFI system should be equal to that of the carburetor it is replacing?


I heard from a couple of sources when EFI was showing up on production vehicles that EFI had to run larger CFM throttle bodies to be equal with a carb.

I know when snowmobiles and motorcycles went to EFI it was the same thing: 46mm throttle bodies to replace 38 to 40mm carbs.

Take that for what its' worth, and perhaps things have changed. shruggy


Mo' Farts

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