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Old 10-16-2003, 02:19 PM
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Re: Question on switching heads and such

Quote:
Originally Posted by 4-Door Flunky
I cannot speak from experience in this matter.
I haven't done the MPFI swap, although I very seriously considered it. I even bought the intake manifold for it, but sold it to another member when I needed cash.
I was going by the "How-To" information here:

http://www.4thgenerationcivic.com/

on Ami's site. I didn't see anything there which said you needed to upgrade the ECU as well.
Flunky
you 100% need the ecu. yes you need to change the resistance (which is why you need a resistor box). but that only deals with the impedance the injector is running off. i'm trying my best to put this in easy to understand terms. the ecu controls the flow thru the injectors.

with DPFI the gas flows in and goes to each port (2 of them...making it dual ) as needed. the ecu isn't controling the flow. with MPFI the gas is delivered at a predetermined flow to each injector...which is ran by the ecu.

shoot, did that make sense? i tried to make sense, LOL!
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