Aquamist VS Snow Performance
http://www.rx7club.com/showpost.php?...8&postcount=38
Thread Starter
Newbie
Joined: Sep 2005
Posts: 45
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From: West Plam Beach, FL
i just want to thank you all for the help i guess i pretty much up to me, im still trying to get in on the group but for the Aquamist for 650 im number 31 so im not to sure if its going to happen, so being that their both really good products i might have to go with price and the snow kit has been offered to me at such a good price. guess i have some thinking to do
subtle you think?..........check these videos out
http://www.rx7club.com/showpost.php?...8&postcount=38
http://www.rx7club.com/showpost.php?...8&postcount=38
None of those were snow kits 2d...and even in my snow stage2 boost, as long as its tuned properly there is no issue in 4th gear on parkway...car just pulls and pulls uber smooth...when its up and running again I will get you some videos 
...its just funny because people have been using meth injection for over 12 years now (mainstream) and shurflo pumps have never been an issue...take the evos for example, when meth started becoming popular no tuners were complaining about the pumps...AMS still uses this style pump and have nothing but great results...The piston pump>shurflo pump but it doesn't mean that the shurflos are bad or junk in anyway, they work great, when tuned they are uber smooth and have proven their reliability...I will try and post a video of my customers evo running a stage1 kit with a simple boost pressure switch...its suprising how smooth that is as well on the evos...
...its just funny because people have been using meth injection for over 12 years now (mainstream) and shurflo pumps have never been an issue...take the evos for example, when meth started becoming popular no tuners were complaining about the pumps...AMS still uses this style pump and have nothing but great results...The piston pump>shurflo pump but it doesn't mean that the shurflos are bad or junk in anyway, they work great, when tuned they are uber smooth and have proven their reliability...I will try and post a video of my customers evo running a stage1 kit with a simple boost pressure switch...its suprising how smooth that is as well on the evos...
None of those were snow kits 2d...and even in my snow stage2 boost, as long as its tuned properly there is no issue in 4th gear on parkway...car just pulls and pulls uber smooth...when its up and running again I will get you some videos ...its just funny because people have been using meth injection for over 12 years now (mainstream) and shurflo pumps have never been an issue...take the evos for example, when meth started becoming popular no tuners were complaining about the pumps...AMS still uses this style pump and have nothing but great results...The piston pump>shurflo pump but it doesn't mean that the shurflos are bad or junk in anyway, they work great, when tuned they are uber smooth and have proven their reliability...I will try and post a video of my customers evo running a stage1 kit with a simple boost pressure switch...its suprising how smooth that is as well on the evos...
...its just funny because people have been using meth injection for over 12 years now (mainstream) and shurflo pumps have never been an issue...take the evos for example, when meth started becoming popular no tuners were complaining about the pumps...AMS still uses this style pump and have nothing but great results...The piston pump>shurflo pump but it doesn't mean that the shurflos are bad or junk in anyway, they work great, when tuned they are uber smooth and have proven their reliability...I will try and post a video of my customers evo running a stage1 kit with a simple boost pressure switch...its suprising how smooth that is as well on the evos...
subtle you think?..........check these videos out
http://www.rx7club.com/showpost.php?...8&postcount=38
http://www.rx7club.com/showpost.php?...8&postcount=38
In the videos it appears the one line (that I am assuming is the Aquamist) has an inline valve. If so, is it a fair comparison? My guess is that the valve prevented the post demand leakage -- am I correct??
If the Aquamist is not progressive then what is it? Wouldn't we want a system that could deliver varying amounts by load? I am assuming Aquamist has this figured out, but would love clarification on how they are doing it.
Are your AFRs the same in 1 - 5 (or 6)? What about on / off throttle and feathering -- road racing (not drag) -- which system is better suited? Thanks
cij911,
The Aquamist progressive system uses an inline valve to control flow, almost identical to the fuel injector. The water pressure is static and set at 125psi.
The Aquamist pump's sole job is to keep the pressure constant regardless of flow, again similar to the fuel injection system except the water is recirculating within the pump instead of "back to tank" as in the fuel injection system.
This is done by incorporating three 125psi by-pass valves between the inlet and exit port internally. This arrangement is a very effective way to regulate system pressure.
The video merely demonstrated the valve's responsiveness to an on/off command. It is not trying to demonstrate the progressive operation.
In order to be able to follow a progressive PWM signal faithfully, the inline valve must be able to open and shut within 2ms (1/500s). The video clearing shown the water spray was reacting well during the rapid-firing of the "on" pulses.
The nozzle on the right showed the response time of a valveless "progressive" pump speed system, widely used on a low cost WI system. It clearly shown it could not respond to the rapid-firing pulse trains. If the system is used to control fluid in the rapid throttle, RPM and Boost changes, it will not cope. This is due to the rotating inertia of pump motor, resisting speed changes. As a result, it will always lags behind a few tenths of a second. It might not seem much, but it is a life time for an engine spinning at 5,000rpm with rapid throttle and gear change.
I hope my explaination it is not too confusing.
The Aquamist progressive system uses an inline valve to control flow, almost identical to the fuel injector. The water pressure is static and set at 125psi.
The Aquamist pump's sole job is to keep the pressure constant regardless of flow, again similar to the fuel injection system except the water is recirculating within the pump instead of "back to tank" as in the fuel injection system.
This is done by incorporating three 125psi by-pass valves between the inlet and exit port internally. This arrangement is a very effective way to regulate system pressure.
The video merely demonstrated the valve's responsiveness to an on/off command. It is not trying to demonstrate the progressive operation.
In order to be able to follow a progressive PWM signal faithfully, the inline valve must be able to open and shut within 2ms (1/500s). The video clearing shown the water spray was reacting well during the rapid-firing of the "on" pulses.
The nozzle on the right showed the response time of a valveless "progressive" pump speed system, widely used on a low cost WI system. It clearly shown it could not respond to the rapid-firing pulse trains. If the system is used to control fluid in the rapid throttle, RPM and Boost changes, it will not cope. This is due to the rotating inertia of pump motor, resisting speed changes. As a result, it will always lags behind a few tenths of a second. It might not seem much, but it is a life time for an engine spinning at 5,000rpm with rapid throttle and gear change.
I hope my explaination it is not too confusing.
Last edited by Richard L; Feb 11, 2007 at 02:04 AM.
