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Originally Posted by Charged Performance
Can't speak to all the reasons for the approximate setting.
However you will notice that the jet flows for are also listed there for 5 bars. A great benefit of the pressure switch is to permit another adjustment to water flow rather than the step jump of jet switching.
There would be nothing wrong with running the 2d at 7 bars.
Out of curiosity why the use of a check valve and why that particular location? The hsv would act as check valve when it is not opened.
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I was told here in the forum sometime ago, that the best setup will be accumulator and a check valve after the pump and manifold/pressure switch. I've never tried without it - but Brad said that from his experience it seems to make things better - I just followed the instructions. Check this thread:
http://waterinjection.info/phpBB2/viewtopic.php?t=88
and especially this post from Brad:
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Mounting the pump and pressure switch in the trunk poses very few problems. If you add a 806-249 check valve after the pressure switch and an good sized accumulator up front the system will be very stable. I would use on large accumulator for each 200hp for maximum protection. The accumulator I use is not from Aquamist, it is about the size and shape of a soft ball. It can be "T"ed into the line with and 806-360 or 806-361. The check valve after the 806-201 manifold is not required it just seems to make things work better. The check valve eliminates the effect of flex in the long line to the front. Again the check valve is not required but experiance has proven it works better. If it helps I have been involved in more than 20 setups like this and and learned from each one of them."
Quote:
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Originally Posted by Charged Performance
Your best bet is at the current setting measure the max flow through your jet(2) by grounding the brown wire from the hsv while the car is in the on position (not running) and the jets are in a measuring container for one minute. Choose a jet or jet combination close to what you are looking to get maximum flow wise using this method. From there you can adjust the pressure to get exactly the flow you are seeking.
With regards to atomization and pressure. The aquamist jets will atomize properly with at least a 2 bar difference across the face of the jet. Any incremental atomization benefit from a greater difference would not be as noticeable as the ability to control the flow rate. (i.e. being at only 100 psi is not so much better atomization that it is worth not being able to adjust the flow up or down)
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I did some experiments few days ago with running the 2D at low IDC. And when the pulses are short, there is no mist coming out of the jets, but stream - this was even with the 0.4mm jet.
So at low IDC - the system is not capable to make mist, but just fills the intake manifold of the car with water - it was confirmed by Richard L.
If I try that with a bigger jet it will be even worse.
So my idea was upping the water pressure will atomise the water better and the mist will be finer (during low IDC) if I use smaller jet/higher pressure than bigger jet/standard preset pressure.
What is your experince with this?