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Profec B-spec2 Problems

D3LTR33

By D3LTR33,
in Engines & Forced Induction

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D3LTR33 Enthusiast

D3LTR33

Posted
Posted

Hey guys.

As you can probably tell from the title... i am having profec problems. :)

I bought it second hand and installed it the other day. it has power and is reading boost perfectly fine. BUT it won't boost over the stock 10 psi (r33 turbo with rb20 actuator on rb20).

I'm pretty sure that it's all installed correctly, checked everything 3 times. Took it for some test runs with a multimeter on the solenoid terminal at the back of the ebc unit. No matter what i did i couldn't get it to read any kind of voltage or current.

When should the ebc be sending voltage to the solenoid and how much?

Any help or suggestions would be great guys.

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https://www.sau.com.au/forums/topic/253000-profec-b-spec2-problems/
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Moodles2 Grand Master

Moodles2

Posted
Posted

The solenoid could be faulty, supplying it directly with 12v the stepper motor should click like crazy if it's working (I think its the proper way to test the stepper motor, i can't remember)

sly32 Proficient

sly32

Posted
Posted

by any chance have u plug up 1 of the holes on the solinoid? theres 3 holes, 1 to actuator, the other to intercooler, and the 3rd 1 which is external gate, if u have blocked up 1 of the holes, that will stop you from boosting over 10psi, your ment to leave it open,

Tree Fitty Contributor

Tree Fitty

Posted
Posted
by any chance have u plug up 1 of the holes on the solinoid? theres 3 holes, 1 to actuator, the other to intercooler, and the 3rd 1 which is external gate, if u have blocked up 1 of the holes, that will stop you from boosting over 10psi, your ment to leave it open,

The com port is running to the Wastegate. The No port is running to the IC piping. And the Nc port is venting to air, i.e unblocked

Im pretty sure in the instructions your ment to block the hole if you dont have an external gate. Thats how i have done mine and it's run 16psi before.

Can anyone confirm this? i didn't see it mention in the instructions.

shotter Rising Star

shotter

Posted
Posted

Ok i cant find anything in the book to say block this off. But as i said mine is blocked and it works fine. If your using an actuator, then the COM goes to the actuator and the NO goes to a pressure source. If you have a external wastegate then the COM goes to the wastegate and the NC goes to a pressure source. I found at one point that if any of the settings are wrong on the controller you can have huge problems getting the boost up there.

Tree Fitty Contributor

Tree Fitty

Posted
Posted
Ok i cant find anything in the book to say block this off. But as i said mine is blocked and it works fine. If your using an actuator, then the COM goes to the actuator and the NO goes to a pressure source. If you have a external wastegate then the COM goes to the wastegate and the NC goes to a pressure source. I found at one point that if any of the settings are wrong on the controller you can have huge problems getting the boost up there.

I'm starting to think this may be the problem as we have NFI how to set the controller up. If you wouldn't mind, can you post your settings so i can duplicate them and atleast see if i can get it boosting?

Thanks for all your help man.

D3LTR33 Enthusiast

D3LTR33

Posted
  • Author
Posted
I'm starting to think this may be the problem as we have NFI how to set the controller up. If you wouldn't mind, can you post your settings so i can duplicate them and atleast see if i can get it boosting?

Thanks for all your help man.

Thanks for replying for me phil. In the instructions it says to take the plugs out and doesn't mention plugging it back up. Also in the trouble shooting section it says a possible cause of boost not increasing/continuing to increase is due to the plug not being removed.

When setting up the controller we have varied the SET % and gain % but boost has not changed from stock at all....

As lance suggested i tested the solenoid from the battery and it made clicking sounds so the problem isn't the solenoid.

Thanks for your help guys and gals

  • 2 months later...
SDEWY5 Community Regular

SDEWY5

Posted
Posted

Wat is your limiter set to? you are definitely not meant to block the remaining port on the solenoid, this is where the excess pressure bled from the actuator is meant to vent through, blocking this will impede how it holds boost.

If the limiter is set to something low it will continually cut the boost pressure everytime it exceeds whatever you have programmed into it.

PM-R33 Grand Master

PM-R33

Posted
Posted (edited)

100% DO NOT BLOCK THE OTHER HOLE.

Set the gains to its lowest of 5%.

Set the start boost to 0.

Set the Limiter to a couple of psi above what the max is you want to run.

Set the limiter boost percentage to whatever you want, i have it set to like 30%.

Now adjust the boost pressure by 10% and see what it does, if it increases you know it is working. Keep increasing it to the max pressure you want to run.

Once that is done start playing with the gains and start boost settings.

EDIT: Just saw the date of this thread :/

Edited by PM-R33

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