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MazdaSpeed 3/6 - Fuel, Nitrous & Water Injection MazdaSpeed 3/6 - Fuel, Nitrous & Water Injection Have a CDFP fuel pump question? Do you want to add Nitrous or Water Injection to your Mazdaspeed 3/6 ? Please come on in!


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 Old 04-02-2016, 05:41 PM   #1
 
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Default Solenoid vs Check Valve videos

I had posted this in a different thread but figured with the title this could be helpful for people who are looking for this.
First off, I have an aem kit. 5 gallon tank mounted in the trunk. So gravity feed is there. I'm running a DO 10 nozzle. I got the DO check valve and was not very happy with how it would taper to a squirt towards the end. So I bought a solenoid from DO. I took videos of the difference of the two and imo I really like the fact that the solenoid is an instant off once you are off throttle. In the videos, what ever you see laying on the car is what isn't being used. To me having meth still spraying after you let off the throttle is not good.
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 Old 04-02-2016, 10:30 PM   #2
 
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I know what you are talking about, the check valves do pee a little. It's basically the amount of fluid in the line between the check valve and the nozzle. This effect can be minimized by running as short of line as absolutely possible between the check valve and the nozzle.

When throttle is off and the nozzle pees out, the boost is off and whatever is left isn't atomizing. I agree that a solenoid is superior for sure, but that the pee is pretty harmless.
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 Old 04-16-2016, 08:03 AM   #3
 
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The dribble is whatever is between the hard stop (pump), and the nozzle. All of the pressure in the system from the pump to the check valve will come out until everything between the pump and check valve reaches the check valve pressure.
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 Old 04-19-2016, 06:27 PM   #4
 
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That's what I figured was going on. This video DO has for their check valve seems more like it's a solenoid imo. I thought the check valve would work like the video.
https://m.youtube.com/watch?v=MAaWtygKAQY

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 Old 04-19-2016, 07:29 PM   #5
 
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Originally Posted by GEE1989 View Post
That's what I figured was going on. This video DO has for their check valve seems more like it's a solenoid imo. I thought the check valve would work like the video.
https://m.youtube.com/watch?v=MAaWtygKAQY

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1. Without knowing how far the pump is from the nozzle, it doesn't really mean anything.

2. M14 will bleed off pressure alot faster than smaller nozzles.
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