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Which Fuel injection system???

  • TBI

    Votes: 13 68.4%
  • CMFI

    Votes: 3 15.8%
  • MFI

    Votes: 3 15.8%
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Discussion Starter · #3 ·
My shop manual(Chiltons) calls it Central Multi-Port Fuel Injection and abbreivates it CMFI. That all I know, we may be talking about the same thing. I'm not really up on fuel injection to much. I have a S15 Jimmy with throttle body and nearly 200K on it and have had no trouble with it. That about the extent of my experience with fuel injection....09
 

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TBI seems to be the most common because its so damn simple to set up, I run it because my rig came factory with it! :flipoff2:

<------ The avatars my dads junk its got a TBI 3fitty because TBI is so damn simple to set up :flipoff2:
 

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I am running a 95 4.3 with the CFMI system. I am running it because I got the engine with 20k miles on it for $300. It is not the engine I would recommend. It has plenty of power etc. but the injection system in that engine was only run that one year. I would recommend a 96+ system. They have more horsepower, a better fuel injection system and there are several companies that are now making wiring harnesses / computers for it. There were none at the time I put my 4.3l in. The TBI model is simpler but produces about 30hp less and is less fuel efficient on top.

Ben
 

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Discussion Starter · #11 ·
Thanks for the replys guys, sorta confirmed my suspicions(sp).

Does anyone know if the injector electrical leads could be "Y'ed and run 2 throttle bodies (4barrel) off of one computer??? Just thinking out side the box a little. ..09
 
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