Devils Own Wi Relay Wiring
 

Me stuff come today for the WI install, so its round 2 tomorrow.

I could do with a bit of advice with regards to the wiring though.

This is the wiring diagram provided with the kit:

Attachment 216739

Only difference is i won't be running the pressure switch, (HSV Instead) so i'll be wanting the pump to be enabled the whole time the ignition is on.


I'm guessing pin 85 is the switching input, and if i wire a second ignition source to this it will enable the relay.

Am i correct?

Also is it ok that my pump will be active the while time i'm driving?
Ok it won't actually be pumping unless it sees a drop in pressure but still.


Cheers
Mark

You don't want the pump on the whole time. The line will already be pressurized every time the pressure switch sends a signal to turn the pump on. So the mist will be instant.

Thanks for the quick response.

As far as i know there is a internal pressure switch in the pump, so if i was to wire the pump directly to a 12v source, and block the end of the water pipe with my finger, the pump would stop automatically.
When i remove my finger, the pump would then errrrr pump :)

I'm unsure on how to wire up the relay though,
I am looking to completely remove the MAP pressure switch (top left in the diagram), instead i will control the quantity of water flowing and when with my Aquamist HSV connected to my EMU.

With the MAP pressure switch removed though there will be no signal to turn on the pump.
As the MAP pressure switch is only earthed on the other contact, i presume if i wire pin 85 to ground this will continuously supply the pump with power while the ignition is on right?


Cheers
Mark

Single Pole Single Throw Relay:

30 +12V power feed
85 GROUND
86 +12V trigger
87 Normally Open Output

Pin 87 supplies +12V (supplied from pin 30) when triggered by pin 86

Cheers Ben :)

When I was installing my kit I tested the pump to prime the line before finishing up the install I connected the pump directly to 12V and no fluid was coming out the pipe. Even holding on there for a solid minute nothing came out. Turned out my check valve was on backwards (mislabeled). Turned it around and voila, fluid spewing out like mad.

Moral of the story: If the pump has power it will run, no matter the pressure build up.

wire the controller through 86 and the valve through 87, or just wire it inplace of the on/off i dont know what it uses to send a signal though.

30 is the high power input (ie from the battery)
86 is the trigger
When you supply power at pin 86, the contact between pins 30 and 87 closes

In the diagram in the original post, the circuit is completed when the pressure switch's contact closes and provides ground.

Wired 85 to ground and pump comes on.

As soon as the HSV opens to pump turns on, when the HSV closes the pump turns off :)

Seems as though there is a pressure switch in the pump, as it only pumps when the pressure drops.


Cheers
Mark

At last install now finished.

Went for a 8.5 litre Go-Kart tank (copied off Joes idea :)), bit big but what the hell.

http://mx5nutz.drmryan.co.uk/forum/s...mg-resized.png Reduced: 86% of original size [ 928 x 666 ] - Click to view full image
http://i32.photobucket.com/albums/d4...s/IMG_1734.jpg

The design is absolutly perfect for a WI tank, from the pick up to the breather valve, to do fact that its dished at the bottom to stop the water slopping around too much.

http://mx5nutz.drmryan.co.uk/forum/s...mg-resized.png Reduced: 86% of original size [ 929 x 697 ] - Click to view full image
http://i32.photobucket.com/albums/d4...s/IMG_1736.jpg

Fitted 2 jets:

1 x preSC a 0.3mm jet.
1 x Dummy TB 0.4mm jet.

http://mx5nutz.drmryan.co.uk/forum/s...mg-resized.png Reduced: 86% of original size [ 929 x 697 ] - Click to view full image
http://i32.photobucket.com/albums/d4...s/IMG_1740.jpg

Only done a quick couple of tuning runs, but i'm well impressed.

Leaned off my AFR's to 12.
Advanced my timing back to stock, so i'm now at 14 btdc without pulling any timing AT ALL http://mx5nutz.drmryan.co.uk/forum/s...ault/smile.gif

NO KNOCK http://mx5nutz.drmryan.co.uk/forum/s...ault/smile.gif

Still need to carryout some fine tuning to get it spot on, but this is the SUB I/J map i'm currently using:

http://i32.photobucket.com/albums/d43/cbr6fs/SubIJ.jpg

As i say i really to spend a bit of time experimenting to get it spot on, but with the timing advanced and the AFR's leaned out the car feels waaayyyy more responsive.

Once i'm happy with the results in goes the 115mm and hello 12psi http://mx5nutz.drmryan.co.uk/forum/s...ault/smile.gif



Cheers
Mark

Great work!! I am planning something similar... how did you connected the 1/4 black tube to 4mm aquamist tube/fittings?

Don't ask, What a ball ache :(

Why don't the Americans fall in line with the rest of the world? ;)

In the end i had to buy a 4mm to 1/8" connector, screw this into a threaded bar, then attach a 1/4" to 1/8" connector on the other end :o

I bought some 4mm fittings, but obviously these were in mm and wouldn't fit any of the DO parts :(

Still well worth it the end though.


One thing i forgot to add, i couldn't seem to get the Aquamist check valve to work, when attached the DO pump just kept on pumping way over its normal pressure.
So much so that i had to cut the plastic pipe before i could release the quick fit connector :o

Tried it both ways but still the same.

Not running any check valve right now (the DO Check valve is 1/4"), the HSV seems pretty solidly shut though.
Guess the only way to see is tomorrow morning, hydro locked engine anyone? :)


Cheers
Mark

Did a bit a datalogging today.

I'm stunned by how much better the car feels, i can't believe it's ONLY from the 6 degrees of advance i was able to claw back, there must also be more power from the cooler intake charge.

To give you some idea i've posted to comparison data pulls.

The top 1 is a data log from about 1 month ago, i was having to pull around 6 degrees of timing to avoid knock.

The bottom 1 was taken this morning, my fueling is still mega rich at 11.8, but to say i'm getting this amount of gain already, without any real fine tuning yet is amazing.

http://i32.photobucket.com/albums/d4.../WIcompare.jpg

The ambient temps were exactly the same on both runs, even though in the top 1 i was rolling 5 kmh faster, the WI pull ended up over 20 kmh faster over just under 2 secs.

I was not expecting this sort of gain :o

You can also see i'm running slightly more boost, this is exactly the same pulley ratio as the top run, but i assume the extra boost is because i'm injecting preSC.


Cheers
Mark

That is bad ass!

wish i could read the charts do you have a color code for them i am not familiar with EMU. Still great job.

Red = RPM
Blue = PSI
Black = VSS

Basically i have highlighted 2 point,
1 right at the start of the pull just before WOT.
The other is 1.6 seconds after the WOT.

The bottom graph is with WI, the step up is the tranny locking up (Auto tranny) its not visible on the first one as the tranny hasn't locked up within the time frame.



Cheers
Mark

sweet thanks Mark. So was this a roll from 80km/h-100km/h vs 80-120? In the same time frame Before and after? If so i am realy impressed.

These are the kinds of results I love to see occuring. That's awesome man.

Its basically a roll-on at the toll station i have to go through to get to work :)

The first 1 i was rolling at 16 kmh when i nailed the throttle.
The second i was rolling at 11 kmh when i went WOT.

I then zoomed in on the datalog window till they were showing exactly the same time frame, and compared the results.

I've got the 115mm pulley to on yet as well, bang goes the tranny :)