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Message: [QUOTE="Tree Trimmer, post: 832274, member: 716"] your on the right track doc, and kinda misguided at the same time. silliness aside 300/200 or 400/200, made all things the same except capacity, use the same amount of fuel, and refill the same rate. the difference comes in here. i'm going to use general round numbers. humor me. if your tuning calls for 200cc per injection event, but on a WOT run you can only refill 195 cc's, this is where the cushion your thinking of comes into play. how many injection events can occur before it runs empty? and how fast do those events happen? therefore how soon from the time you mash the pedal till its empty with a 300? now a 400? it has nothing to do with refilling faster, your fuel supply system is going to supply both injectors the same amount of fuel, it does not care if its filling a 300 or a 400. its a cushion against running them dry from the inability of refilling them with fuel, for when whatever mechanical/tuning issue arises, whether seen or unforseen. if your tuning calls for 200 cc's, then you sure dont want to have a 200 cc injector. the injector would beat itself to death when (tim, fill in my blanks) _____(plunger?) beats against______ when emptying the fuel. you also use the fuel as a cushion/lubricant for those particular moving parts. the professionals can clean that up, but thats the jist of it. [/QUOTE]

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