Water injection control using LED 18
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Water injection control using LED 18
I want to use LED 18 to trigger my water injection, since it's simply on/off.
I have rigged up led 18 to x12. The hot wire on my water pump's relay runs to s2 on the relay board.
Now, I have LED 18 set up as Output 4, source MAP, 140 as the activation point.
It doesn't work. The pump works if I touch the relay wire to the positive terminal on my battery.
Is there something else that I need to set in MegaTune or should I suspect my LED 18 mod? The LED 18 is on all the time when the key is on or car running.
I have rigged up led 18 to x12. The hot wire on my water pump's relay runs to s2 on the relay board.
Now, I have LED 18 set up as Output 4, source MAP, 140 as the activation point.
It doesn't work. The pump works if I touch the relay wire to the positive terminal on my battery.
Is there something else that I need to set in MegaTune or should I suspect my LED 18 mod? The LED 18 is on all the time when the key is on or car running.
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How have you wired your relay? The transistor supplies a ground so one end of the relay should always go to +12v and the other to X12. Don't forget the protection diode across the relay terminals.
James
James
I can repair or upgrade Megasquirts in UK. http://www.jamesmurrayengineering.co.uk
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http://static.summitracing.com/global/i ... -20001.pdf
Look at Electrical Diagram Stage 1.
It's wired like that, except the red wire to the kit's pressure switch is the wire I plugged into s2 on the relay board.
Red wire - s2
Black wire - ground
Yellow wire - to + terminal on battery, fused
Green wire - to red + wire on pump
I'm not sure if I did the correct LED modification. I did it just like the LED 17 ignition mod (resistor from - leg to right side of, er, that other component, and then a wire to x12). Was this not correct?
Look at Electrical Diagram Stage 1.
It's wired like that, except the red wire to the kit's pressure switch is the wire I plugged into s2 on the relay board.
Red wire - s2
Black wire - ground
Yellow wire - to + terminal on battery, fused
Green wire - to red + wire on pump
I'm not sure if I did the correct LED modification. I did it just like the LED 17 ignition mod (resistor from - leg to right side of, er, that other component, and then a wire to x12). Was this not correct?
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Connect the red wire to switched 12v and the black wire to S2.
James
James
I can repair or upgrade Megasquirts in UK. http://www.jamesmurrayengineering.co.uk
My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
MSEXTRA documentation at: http://www.msextra.com/doc/index.html
New users, please read the "Forum Help Page".
My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
MSEXTRA documentation at: http://www.msextra.com/doc/index.html
New users, please read the "Forum Help Page".
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- Experienced MS/Extra'er
- Posts: 327
- Joined: Sun Sep 12, 2004 4:41 pm
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Compare the summit wiring diagram with the MS1/Extra relay diagram and you'll see why.
James
James
I can repair or upgrade Megasquirts in UK. http://www.jamesmurrayengineering.co.uk
My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
MSEXTRA documentation at: http://www.msextra.com/doc/index.html
New users, please read the "Forum Help Page".
My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
MSEXTRA documentation at: http://www.msextra.com/doc/index.html
New users, please read the "Forum Help Page".
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Wow!
I'm using a 50/50 blend of water and denatured alcohol. Smallest jet that came with the kit, 140psi pump pressure.
~70F ambient temperature.
MAT @ cruise: 120F
MAT @ 13psi without injection: 233F
MAT @ 13psi with injection: 120F
Later, ~60F ambient temperature
MAT @ cruise: 105F
MAT @ 13psi without injection: 200F
MAT @ 13psi with injection: 98F
Double wow! I've added a little timing and leaned my VE all the way back to 100% under full boost to retain 11.5:1 AFR. Duty cycle went down, no detonation, smoother power. I would like to have had an air-to-air for several reasons but there's just nowhere to put it. I'm very pleased with the results of this system so far.
Snow Performance Boost Cooler Stage 1
I'm using a 50/50 blend of water and denatured alcohol. Smallest jet that came with the kit, 140psi pump pressure.
~70F ambient temperature.
MAT @ cruise: 120F
MAT @ 13psi without injection: 233F
MAT @ 13psi with injection: 120F
Later, ~60F ambient temperature
MAT @ cruise: 105F
MAT @ 13psi without injection: 200F
MAT @ 13psi with injection: 98F
Double wow! I've added a little timing and leaned my VE all the way back to 100% under full boost to retain 11.5:1 AFR. Duty cycle went down, no detonation, smoother power. I would like to have had an air-to-air for several reasons but there's just nowhere to put it. I'm very pleased with the results of this system so far.
Snow Performance Boost Cooler Stage 1