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1227727 into a 1227749

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Old Dec 4, 2002 | 01:22 PM
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funstick's Avatar
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From: great lakes
1227727 into a 1227749

has anybody ever added the correct injector fets ?? ive got a mothebroard here to look at 2 7727's and a 749 ( dead unfortuantely) i would like to turn a 727 into a 749 by adding the missing inj fet and obivously changing out the nessacary resistors. any body done this with any successs ?
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Old Dec 5, 2002 | 01:01 AM
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You Need to Run Low Impedance Injectors ?

Otherwise leave the Drivers alone... the 7749 can only push 4 of them anyway.

The $58 Code supposedly works on the 7730, Should work on the 7727. I can't give you any info on this but I do know it is out there.
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Old Dec 5, 2002 | 06:07 PM
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From: great lakes
yeah i have a 86 honda accord runniong a 749. i use 4 low impedence 32lbper hr injectors right now. but my ecm is mounted underhood due to space limitations.ive made it weather tight but id prefer to use a 727 case as it looks to be much more weather proff.
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Old Dec 5, 2002 | 10:33 PM
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Car: 1991 Z28
Engine: 305 TPI under 14 psi
Transmission: aftermarket T56
Axle/Gears: Moser 12 bolt 3.08 gears
Here's an idea. Could you gut a 727 case and then swap in the 749 parts? Just an idea. It would most likely be easier then adding an additional fet to the 727 maybe. If you were running 4 high imp injectors then I would say go for the syty code in a 727, but with 4 low imp injectors you'll need the extra driver fet.
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Old Dec 5, 2002 | 11:14 PM
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I would think Swapping the 7749 board into the case would be more trouble than Moving the 7749's drive to the 727. Besides in a NA application I would prefer to work with the $8D

Connecting the 727's weather pack connectors to the board would be a PITA, imo.

Course I don't have one in front of me.

86 Honda Civics came w/ 32lb/hr Low Impdeance injectors stock ?

hmmmm hahaha
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Old Dec 6, 2002 | 05:01 PM
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no the honda came stock with 15lb per hr injectors. this is in preporation for a t3 turbo. i plan to run 20psi of boost and that how much fuel i will need.im porepping everythinbg for turbo. ive even done all my tunning thus far with a 2bar map. its getting there cold starts are ill i need to work on now.
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