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Honda ECUs and Saturated VS Peak and Hold injectors

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Old Feb 26, 2002 | 11:33 AM
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Default Honda ECUs and Saturated VS Peak and Hold injectors

I'm looking for some in-depth Honda ECU info...

In a Honda ECU, what is it that determines whether an ECU is designed to drive Saturated VS Peak and Hold fuel injectors? Is it something specific that is designed into the ECU hardware? Or is it a function of the fuel maps stored on the ROM that determines what injector type the ECU is designed to drive?

I understand the impedance differences that these injector types have, and I know that the Peak and Holds also require the resistor pack on the injctor harness on a Honda...

But specifically, I'm talking about a P13 ECU (peak and hold) VS a P72 ECU (saturated)... What is the difference? Can I conceivably have maps from a P13 burned to a ROM and use those maps on a P72? Are "Peak and Hold fuel maps" interchangable with "Saturated fuel maps" on these honda ECUs?

Andrew
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Old Feb 26, 2002 | 01:14 PM
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Default Re: Honda ECUs and Saturated VS Peak and Hold injectors (aklucsarits)

what!

here's a low down aite
i have a h22a on my civic i'm using da h22 injector w/ resistor pack and top of dat i'm using p72 wich is a saturated ecu rite!
as long as u have a resistor pack u'r fine
to much blah blah blah on u'r sit man..... donma
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Old Feb 26, 2002 | 02:44 PM
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Default Re: Honda ECUs and Saturated VS Peak and Hold injectors (WICKEDII)

Pulse Width is blind to the type of injector.
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Old Feb 27, 2002 | 04:35 AM
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Default Re: Honda ECUs and Saturated VS Peak and Hold injectors (EE_Chris)

Pulse Width is blind to the type of injector.
OK. Good info, keep it coming... So you are saying that the pulse width that is defined in the maps on ROM would be identical for any injector type, right?

What other parameters are defined in the tables that comprise the "maps" in ROM? Is there anything else that would prevent maps from a P13 from working on a P72?

Andrew
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Old Feb 27, 2002 | 06:43 AM
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Default Re: Honda ECUs and Saturated VS Peak and Hold injectors (aklucsarits)

how many ohms to operate them the high impeadence saterated injectors use 12-16 ohms to work and the low impeadence use 2-5 ohms. also low impeadence injectors(peak and hold) are made to very high cc like 1200cc's they only make saterated to like 550 or 440 i forget. tahts why most peeps are using low impeadence(peak and hold).
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Old Feb 27, 2002 | 11:28 AM
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Default Re: Honda ECUs and Saturated VS Peak and Hold injectors (rainforest)

TTT

Still need some more definitive info here... Will H22a maps will work just fine on a P72 ECU?

Andrew

p.s. rainforest: Are you the same rainforest from the Endyn board?
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Old Feb 27, 2002 | 04:37 PM
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Default Re: Honda ECUs and Saturated VS Peak and Hold injectors (aklucsarits)

ttt
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Old Feb 27, 2002 | 04:46 PM
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Default Re: Honda ECUs and Saturated VS Peak and Hold injectors (aklucsarits)

yes
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Old Feb 28, 2002 | 02:53 AM
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Default Re: Honda ECUs and Saturated VS Peak and Hold injectors (rainforest)

H22 maps are made for a bigger cam. Read Hondata's tech section, you
can call them also. hondata.com
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