Prochargers with MEFI 1 ?
#11
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Switch to Holley efi and ditch the mefi system . You can use most if not all of your original sensors and injectors etc. the price of tuning your old system and sending it back and forth will be more than half the price of a Holley system. Went from mefi 3 to Holley efi on a non blown motor and the only thing I regret was not doing it that way the first time. Jeff wurl
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What are the part #'s you guys are talking about. What I was finding was the HP computer for @ $1100 then a $500 Holley harness, plus wiring and a tune. If that's the case I might be better off going with a built harness and computer from Eddie Young for $1850. Thanks for the help.
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Depending how handy you are with wiring you can buy a mefi4a ecu and harness from gm motorsports for 750 to 850$, you have to shop around and harness will need some work to git BUT i have retrofitted several of them onto various boat and car engine
http://www.gmpartsdirect.com/ignitio...7/?parent=1092
This is a example of the part number, not necessarily the best price out there, Smitty
http://www.gmpartsdirect.com/ignitio...7/?parent=1092
This is a example of the part number, not necessarily the best price out there, Smitty
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Get ahold of Alex Haxby "Haxby Speed" on here for part numbers on the Holley for your motor. He is a distributor and can help you out. If you buy from Summit or Jegs you are on your own for tuning. Also search for the thread on here called " EFI for everyone" it has a ton of info related to your situation. It is a great read
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On other hand, if you dont posses tuning skills and mefi IS complicated and you have to pay a third party for tunes or to tune your boat then buy the simplest system you can even if its a few thousand dollars more, youll be better off,Smitty
Last edited by articfriends; 05-11-2017 at 11:39 PM.
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On another note, you DEFINATELY want to have your injectors flowed and cleaned before boosting your motor, they are old and good chance a few flow low. Almost every set i flow and clean at my shop have at least one that flows 10 to 15 % high and one that flows 8+% low, Smitty
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Will his 454MPI's need the fuel rail mods ? I know the 502's do.
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