Progressive injection Vs. on/off injection

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Sep 4, 2007 | 08:40 AM

#16

Ultimate CC

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From: Peekskill NY

we just need malibuJack for a week ahha...

Sep 4, 2007 | 04:41 PM

#17

Richard L

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Quote:

Originally Posted by C6C6CH3vo

Are the high speed valves contollable outside the IDC range through RPM? If so then why not look in to a patch for ECUFlash that can run the HSV that will run any value you like at any rpm vs load

I am not sure if you are asking if the HSV can be controlled by the ECU's spare PWM output? or spliced into an existing fuel injector?

Sep 4, 2007 | 06:37 PM

#18

C6C6CH3vo

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From: sc

A HSV contolled by a map similar to, but seperate from, the AFR map. Somehow contoll the HSV duty by RPM vs LOAD, without closed loop of course

Sep 4, 2007 | 06:42 PM

#19

Richard L

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If you have a spare PWM channel on your ECU, you can easily do that with the HSV.

I believe Element 's Hydramist is already doing that, not sure if it is available for the EVO.

Sep 5, 2007 | 05:07 AM

#20

deadbeatrec

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From: Albany, NY

so then the HFS-1 is......

and the HFS-5 is.......

im still cloudy on the differences between the two. is that the difference, one is on/off and the 5 is progressive?

Sep 5, 2007 | 05:23 AM

#21

SlowCar

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From: Kingdom of Saudi Arabia

hfs-1 = on/off (system fires full blast once the trigger point is reached)

hfs-5 = high speed valve (HSV) pulses in sync with 1 of the fuel injector once trigger point is reached

both are constant pressure injection systems - you get maximum atomization, which is crucial for good distribution of injectant down the 4 intake runners

Last edited by SlowCar; Sep 5, 2007 at 05:53 AM.