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Old 10-22-2015, 05:59 PM   #1
KornShaDoW097
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2004 WRX

Default Devils own and aquamist and injector calibration

So it seems the aquamist pump is inferior as far as pressure. 160psi max vs 300psi max. The flow is .3gpm lower but that is irrelevant in my situation. At 30psi this means 130psi on the pumps output... Which is low.

Anyone know if the Devils own head assembly is compatible with the aquamist DDP 5800 pump?

Also will this increase pressure or is the solenoid the bigger factor?

One last thing. We are told to calibrate the injectors at 15-25% max injector flow. But in open air the pump is at 0psi of boost... So how exactly is this calibration considered accurate? I mean boost will reduce flow so .. Shouldn't I calibrate to 30psi above the flow in open air? How do i do that?



Thanks

J
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Old 10-23-2015, 07:08 AM   #2
rtv900
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you don't happen to have a pdf for the instructions on calibrating this do you?
if so could you attach it?
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Old 10-25-2015, 03:47 AM   #3
Aquamist
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Quote:
Originally Posted by KornShaDoW097 View Post
So it seems the aquamist pump is inferior as far as pressure. 160psi max vs 300psi max. The flow is .3gpm lower but that is irrelevant in my situation. At 30psi this means 130psi on the pumps output... Which is low.

Anyone know if the Devils own head assembly is compatible with the aquamist DDP 5800 pump?

Also will this increase pressure or is the solenoid the bigger factor?

One last thing. We are told to calibrate the injectors at 15-25% max injector flow. But in open air the pump is at 0psi of boost... So how exactly is this calibration considered accurate? I mean boost will reduce flow so .. Shouldn't I calibrate to 30psi above the flow in open air? How do i do that?



Thanks

J
All wmi manufacturers use the same pump except some wound up the pressure to impress. It is meaningless. Let me explain.


Pressure is not generated by the pump but by the size of the restrictor. Any 5800 pumps can be adjusted to 300psi and beyond by winding in the small set screw on the front of the pump. Even higher pressure can be achieved if you put in a stronger spring behind the set crew. I have seen 400psi+.

So why don't we do it?

1. The Aquamist pump is set from factory to 160psi. A PWM signal to an inline fast acting valve, similar to a fuel injector. This results in excellent atomisation from 10-100% flow. All other systems rely on varying pump speed to change flow. Low pump speed = low flow = low atomisation.

2. Setting the pump pressure higher also means larger drop in pressure as the flow increases. Imaging two water tanks, one tall and the other short. When drained at the same rate, the level of the tall tank will drop faster. But it is great for marketing. People's attention is diverted.

3. We consulted the Aquatec engineers carefully before we set the pump to 160psi. 180psi is regarded as acceptable. 200psi is only good for short term. 300psi is not achievable for the 5800 pump at flow over 500cc/min. Try it.

4. Mechanical stress and temperature rise is a factory you should consider seriously.

Please read the sticky above so you can see why we design our system this way. You are not the only one reads into these marketing stunts and immediately decided Aquamist pump is inferior, hence the system. If really want to know the truth, read the link below:

http://forums.nasioc.com/forums/show....php?t=1413320
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Old 10-25-2015, 01:34 PM   #4
shaman
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Default

Quote:
Originally Posted by KornShaDoW097 View Post
So it seems the aquamist pump is inferior as far as pressure. 160psi max vs 300psi max. The flow is .3gpm lower but that is irrelevant in my situation. At 30psi this means 130psi on the pumps output... Which is low.
160 psi isn't low unless you are running 130psi of boost.

Quote:
Also will this increase pressure or is the solenoid the bigger factor?
A larger Solenoid is needed at higher pressures. As Richard stated, the pressure only matters if it's your way of "progressivizing" your flow.

Quote:
One last thing. We are told to calibrate the injectors at 15-25% max injector flow. But in open air the pump is at 0psi of boost... So how exactly is this calibration considered accurate? I mean boost will reduce flow so .. Shouldn't I calibrate to 30psi above the flow in open air? How do i do that?
Page 4 has a spreadsheet you can use.
http://www.aquamist.co.uk/HFS6/HFS-6-3w.pdf
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Old 10-28-2015, 03:06 AM   #5
KornShaDoW097
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Alright. Well The manual states if you need 0-1080cc of flow you can use a restrictor (.9mm) but anything over, you can omit it.

Is this for building pressure? Or what is the point?

I have never used one and aim for 820cc
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Old 10-28-2015, 03:19 AM   #6
KornShaDoW097
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Default

Quote:
Originally Posted by Aquamist View Post
All wmi manufacturers use the same pump except some wound up the pressure to impress. It is meaningless. Let me explain.





Pressure is not generated by the pump but by the size of the restrictor. Any 5800 pumps can be adjusted to 300psi and beyond by winding in the small set screw on the front of the pump. Even higher pressure can be achieved if you put in a stronger spring behind the set crew. I have seen 400psi+.



So why don't we do it?



1. The Aquamist pump is set from factory to 160psi. A PWM signal to an inline fast acting valve, similar to a fuel injector. This results in excellent atomisation from 10-100% flow. All other systems rely on varying pump speed to change flow. Low pump speed = low flow = low atomisation.



2. Setting the pump pressure higher also means larger drop in pressure as the flow increases. Imaging two water tanks, one tall and the other short. When drained at the same rate, the level of the tall tank will drop faster. But it is great for marketing. People's attention is diverted.



3. We consulted the Aquatec engineers carefully before we set the pump to 160psi. 180psi is regarded as acceptable. 200psi is only good for short term. 300psi is not achievable for the 5800 pump at flow over 500cc/min. Try it.



4. Mechanical stress and temperature rise is a factory you should consider seriously.



Please read the sticky above so you can see why we design our system this way. You are not the only one reads into these marketing stunts and immediately decided Aquamist pump is inferior, hence the system. If really want to know the truth, read the link below:



http://forums.nasioc.com/forums/show....php?t=1413320

I get it. Great info. Thanks!

It makes sense since all pumps lose flow with higher pressure.

I did see your old thread with with DO and snow.

I have mine set at 1x, IDC and MAP linked, MAP trigger (was IDC but I'm trying something else) .8/.9 jets and set to 820cc.

Do i need a restrictor to even out flow at lower IDC? I was told it was not needed by a distributor.
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Old 10-28-2015, 03:20 AM   #7
KornShaDoW097
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Quote:
Originally Posted by shaman View Post
160 psi isn't low unless you are running 130psi of boost.

A larger Solenoid is needed at higher pressures. As Richard stated, the pressure only matters if it's your way of "progressivizing" your flow.

Page 4 has a spreadsheet you can use.
http://www.aquamist.co.uk/HFS6/HFS-6-3w.pdf

What would the minimum pressure for proper atomization with these injectors?
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Old 10-28-2015, 03:34 AM   #8
Aquamist
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A differential pressure of 60psi is needed to obtain good atomisation on most jets, including aquamist. If you are serious about consistent atomisation, go for a "constant" pressure + "PWM" valve system.

Regarding Aquamist low profile 90-deg fittings, here is an extended range we supply on request.
http://www.aquamist.co.uk/vbulletin/...ead.php?t=1742
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Old 10-28-2015, 04:30 AM   #9
KornShaDoW097
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I have a aquamist HFS 2/3 system installed. I just never heard of any injector mods and hated having them under my intercooler so opted for an alternative. If i knew this sooner, id of saved a ton of time and money....

So where can I buy these and what is the .9 restrictor used for, specifically?
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Old 10-28-2015, 12:35 PM   #10
Aquamist
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2004 Citroen Picasso
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We have lots and lots or parts not available at the shop or our dealers. It is worth sending me a PM as I have been a vendor here since 2006.

Most people are concerning about shipping cost from England. UKPS service is very reasonable, apart for non-trackable, but we haven't yet lost a shipment yet for the last ten years.







Last edited by Aquamist; 10-28-2015 at 12:56 PM.
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