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Old 10-07-2007, 07:01 AM   #1
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Default Progressive WI w/ MSPNP?

I'm looking into a progressive WI setup. I know the MS will handle a single-stage setup, but can the center connector of the MSPNP be used to trigger a progressive setup as well? Can the MSPNP be that progressive controller somehow?
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Old 10-07-2007, 09:21 AM   #2
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If you configure it to output a variable voltage signal you should be fine. You would still need there solenoid.
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Old 10-07-2007, 10:32 AM   #3
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In theory, yes it can. You'll need a high speed valve. Aquamist makes one, and it's expensive. I've been dragging my feet on this one, waiting for a more economical hsv to come on the market.
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Old 10-07-2007, 05:24 PM   #4
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In theory, yes it can. You'll need a high speed valve. Aquamist makes one, and it's expensive. I've been dragging my feet on this one, waiting for a more economical hsv to come on the market.
ditto, I've enquired to FJO about their HSV as it's half the price, but it looks to me like the nozzle is integrated into the HSV and they won't answer as to whether it's removable or not :(

nozzle size is really important to us MS users as we don't have a table to program in...

FJO linky
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Old 10-07-2007, 05:55 PM   #5
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I dunno theoretically you could program the DC like a Nos solenoid that does not look like a special solenoid to me the reason it is so close to the nozzle is likely to prevent the siphoning of WI fluids under vacuum. In theory by controlling the valves totall opening you will controll the flow and pressure on your nozzle but if all else fails i gues you could just buy one from them and use it as is. I don't like how they have no real specs or good pictures how do they expect people to copy them sheesh.
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Old 10-07-2007, 06:10 PM   #6
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Quote:
Originally Posted by magnamx-5 View Post
I dunno theoretically you could program the DC like a Nos solenoid that does not look like a special solenoid to me the reason it is so close to the nozzle is likely to prevent the siphoning of WI fluids under vacuum. In theory by controlling the valves totall opening you will controll the flow and pressure on your nozzle but if all else fails i gues you could just buy one from them and use it as is. I don't like how they have no real specs or good pictures how do they expect people to copy them sheesh.
wow, use punctuation much?

It's a proper high speed valve, so if you could alter the nozzle size that's appropriate to your injectors (the MS WI system just duplicates Inj channel 2) so if you have 600cc injectors you fit a nozzle that will flow x% of water that you desire, that way you always have that amount flowing.

the question for me is, can you alter the nozzle size... if you can I'll buy one
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Old 10-07-2007, 06:13 PM   #7
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Why would you need to alter size? Just buy one that is vastly to large for you and ,there will be the headroom and adjustability you desire.
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Old 10-07-2007, 06:47 PM   #8
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Why would you need to alter size? Just buy one that is vastly to large for you and ,there will be the headroom and adjustability you desire.
that's the point, there is *no* adjustablility.

with the MS WI, it basically copies the output of Injector channel 2 so If i use a jet which flows 600cc of water per min (like my injectors) i'll get 50% of water to fuel al the time.

so I need to be able to swop the jet for one that will flow 10 - 15% of my injectors.

it's a limitation of the MS system.
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Old 10-07-2007, 07:43 PM   #9
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that's an interesting item, thx for the link. might be good enough.
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Old 10-07-2007, 08:38 PM   #10
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Yes but you have controll on the percentage the 2nd map throw out there don't you? Why else do we have 2 fuel tables?
To qoute my Megasquirt INJECTOR CH2 (PW2) Either use VE Table 1 or 2, 1=Normal 2=DT
GammaE On or Off = : Accel Enrich, WarmUpEnrich + AirTemp Corr
Pulse Inj CH2 during cranking Do you want CH2 to add fuel whilst crankin"

Last edited by magnamx-5; 10-07-2007 at 09:02 PM.
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Old 10-07-2007, 09:07 PM   #11
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The MS uses Fuel map 2? The help file in Megatune on WI is a bit confusing.
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Old 10-07-2007, 09:09 PM   #12
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Not the way we use it but i dont see why it can't i wish jerry or someone else knowledgable of MS would post up on this.
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Old 10-07-2007, 09:13 PM   #13
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no fuel map 2 is an alternate fueling map. an example use would be to switch from your standard to a rich map to run more fuel for NOS for instance.
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Old 10-07-2007, 09:16 PM   #14
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So why do we have a 2nd injector channel listed ben i know it is ussualy used for rich/vs lean maps as you said but nothing, i have read says it can't be used in conjunction, with the 1st channel while it controls the HSV.
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Old 10-07-2007, 09:29 PM   #15
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yeah I don't think it works like that. but perhaps you would have success if you ran the HSV as a staged injector. I think that would allow manual table based adjustment.
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Old 10-07-2007, 10:40 PM   #16
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It isn't like you are trying to spray it at idle why not run it staged?
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Old 10-07-2007, 10:50 PM   #17
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after reviewing that section of the manual, I'm not sure staged injection is appropriate for the application. It seems intended to fire second stage injectors in a rotary application.
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Old 10-07-2007, 11:05 PM   #18
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Injector Staging can be either simultaneous (both injector drivers fire at once), or alternating (one injector driver fires on one injection event, the other fires on the next, and so on; 'ping-ponging' back and forth). If you choose alternating for port injection, make sure your number of squirts is an even number (2,4,...) and evenly divisible into the number of cylinders. For example, with an eight cylinder engine, you could use alternating and 2, 4, or 8 squirts/cycle. With a six cylinder, if you choose alternating, you MUST use 2 or 6 squirts/cycle. Also, the only possible combinations for an odd-cylinder count engine are either 1 squirt/simultaneous or N squirt/simultaneous combination, where N is the number of cylinders." http://www.megasquirt.info/megatune.htm#sc
Then just have the selonoids signal interupted with a boost switch or a relay controlled by the MS wich could be set off by say a shift light signal or something. Who cares if the map is trying to fire so long as the WI is not firing. I highly doubt you want to run around with a pressurized system all the time anyway do you, so the soleniod's activation source can also be the pumps signal to run. It seems pretty simple to me
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Old 10-08-2007, 01:18 AM   #19
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Quote:
Originally Posted by Ben View Post
no fuel map 2 is an alternate fueling map. an example use would be to switch from your standard to a rich map to run more fuel for NOS for instance.
I haven't searched too hard, but I did find the option for alternating fuel maps. it uses VE1 and VE3. No mention of VE2.
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Old 10-08-2007, 09:46 AM   #20
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Quote:
Originally Posted by magnamx-5 View Post
Yes but you have controll on the percentage the 2nd map throw out there don't you? Why else do we have 2 fuel tables?
To qoute my Megasquirt INJECTOR CH2 (PW2) Either use VE Table 1 or 2, 1=Normal 2=DT
GammaE On or Off = : Accel Enrich, WarmUpEnrich + AirTemp Corr
Pulse Inj CH2 during cranking Do you want CH2 to add fuel whilst crankin"

you can use the 2nd fuel table as a WI map, but to do that you need to go from 2 squirts alternating, to 1 squirt simultanious, you'll lose loads of injector resolution as you're not even batch firing, it's all four at once.

doing this frees up one of the injector drivers, which can be mapped to one of the other fuel tables, hook the injector channel to the HSV and there you go a fully mappable table.

trust me mate, i've researched it, there's no alternative unless you go standalone WI controller.

now, can the FJO nozzle be replaced???
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