Apexi boost solenoid?
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Has anyone tried using the apexi boost control solenoid with the emu I have it hooked up and can't seem to get it to work correctly. It won't change DC.
Re: Apexi boost solenoid?
aaronRX72JZ wrote:Has anyone tried using the apexi boost control solenoid with the emu I have it hooked up and can't seem to get it to work correctly. It won't change DC.
If you have this one

and had isntaled flyback diode, it must work.
- Kisielisodd
- ECUMASTER TEAM
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Re: Apexi boost solenoid?
It should work even without flyback diode. Maybe solenoid is broken? When You connect +12 and ground directly does it work ?
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- Posts:34
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Re: Apexi boost solenoid?
i have it connected without flyback diode. it will work but only if i have it set to reverse polarity and the only thing i can change is the overall operation duration by lowering the solenoid frequency from 17Hz to 5. im guessing that it should be working without changing the polarity?
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Re: Apexi boost solenoid?
Thats the same one i have... i've manually tested the solenoid valve and its seems to be working correctly. and ive checked my wiring several times cant find any issues.Karel wrote:aaronRX72JZ wrote:Has anyone tried using the apexi boost control solenoid with the emu I have it hooked up and can't seem to get it to work correctly. It won't change DC.
If you have this one
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and had isntaled flyback diode, it must work.
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- Posts:34
- Joined:Fri May 29, 2015 4:34 am
Re: Apexi boost solenoid?
any ideas? maybe a ECU issue? is there a way to check DC operation from the ECU with a multimeter?
Re: Apexi boost solenoid?
Use some small bulb like 12V 5W and try to use DC 10-90% it should come brighter or darker............. this is the easiest way.aaronRX72JZ wrote:any ideas? maybe a ECU issue? is there a way to check DC operation from the ECU with a multimeter?
Re: Apexi boost solenoid?
HI Are you running brand new ecu? or second hand?
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- Posts:34
- Joined:Fri May 29, 2015 4:34 am
Re: Apexi boost solenoid?
its brand new. ill try the bulb thing this afternoon.gregpe wrote:HI Are you running brand new ecu? or second hand?
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- Posts:34
- Joined:Fri May 29, 2015 4:34 am
Re: Apexi boost solenoid?
So I got it working. Turns out my emu won't operate the solenoid if the key is on the engine has to be running... Is this normal? Also the correction response is a little slow. I have frequency-25hz, Kp-1, Ki-16, Kd-0, and interval limit-400. not quite sure which to change to increase the DC error response speed.
Re: Apexi boost solenoid?
Works perfectly with EMU . 
