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where do you get MFI from? Some older, like early 90's GM V6's were MPFU, multi-port fuel injection, but the LT1's have SPFI, sequential port fuel injection.
 

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I've usually seen it as MPFI. Anything with an injector for each cyl I would say is technically multiport, but as NICETRY said newer stuff is SFI/SPFI since each injector is fired in time rather than just all at once.
 
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