Jump to content
SAU Community

Profec B Installed... Help Please

islade

By islade,
in Engines & Forced Induction

 Share

Recommended Posts

islade Rising Star

islade

Posted
Posted

Hey guys,

I just installed a profec B spec 2 boost controller in my car.

The solenoid is definately connected to the wastegate and the 'compressor nipple' (which was working fine at 8psi without solenoid so i know its a good source)

Power is connected, the unit lights up, and appears to be working properly.

Boost source to controller is good, it's connected with a Y piece to the boost guage right beside it, and the profec shows the correct boost level.

The cable that goes unit->solenoid is definately plugged into the back of the unit and the solenoid.

I've put the unit on hi, and turned it up to 50% without changing other settings, but it still just sits at 8psi.

In case i'm a retard and did it wrong, i swapped the hoses into the solenoid, but this also made no difference

What can I do to troubleshoot?

Thanks,

Isaac

Link to comment
https://www.sau.com.au/forums/topic/274752-profec-b-installed-help-please/
Share on other sites
islade Rising Star

islade

Posted
  • Author
Posted
Sure you are setting the boost and not the gain?

Yea, positive :banana:

There is a third 'air hole' that is covered, i think it's used if you have an external gate, but the instructions say (after re-reading them) to remove covers off all holes, so i've removed that, will test drive this afternoon to check :)

FLN75S Mentor

FLN75S

Posted
Posted
Yea, positive :thumbsup:

There is a third 'air hole' that is covered, i think it's used if you have an external gate, but the instructions say (after re-reading them) to remove covers off all holes, so i've removed that, will test drive this afternoon to check :)

It should work now that cover needs to bleed to atmoshphere otherwise you will not have control of boost from what i can remember with mine let us know how you go.

PM-R33 Grand Master

PM-R33

Posted
Posted
There is a third 'air hole' that is covered, i think it's used if you have an external gate, but the instructions say (after re-reading them) to remove covers off all holes, so i've removed that, will test drive this afternoon to check :thumbsup:

Yep, there's your problem.

  • 5 months later...
Jamb Rookie

Jamb

Posted
Posted

anyone have any more tips and pointers ive just installed one in my car but i cant seem to get it working, and i have tripple checked the connections are correct maybe ill try removing the cap also

and i have no idea what to set the gain and settings on argh doing my head in

islade Rising Star

islade

Posted
  • Author
Posted
anyone have any more tips and pointers ive just installed one in my car but i cant seem to get it working, and i have tripple checked the connections are correct maybe ill try removing the cap also

and i have no idea what to set the gain and settings on argh doing my head in

I installed this along with a new turbo, which was having wastegate problems, so i needed to unblock that piece, but it still didn't work until i got the wastegate fixed :)

PM-R33 Grand Master

PM-R33

Posted
Posted
anyone have any more tips and pointers ive just installed one in my car but i cant seem to get it working, and i have tripple checked the connections are correct maybe ill try removing the cap also

and i have no idea what to set the gain and settings on argh doing my head in

The cap has to be removed, that is the whole point, how is it ment to bleed out air if it is blocked.

geraus Mentor

geraus

Posted
Posted

Yeh i've got a Profec Spec B II as well, Hightboost 17psi and low boost 14psi. The caps have to be removed for the air to bleed out. To make your boost go up you should move up the gain %% , your boost should go up.. if its not then have you checked your actuator?

heres a pic of mine this is how mine is connected.

img0257bq.th.jpg

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • GTSBoy
      Anyone running the VQ37VHR with forced induction?

      By GTSBoy · Posted

      Wrong question. There's no point in spending the rather large sum of cash and effort to add turbo, without taking it to the "sensible" limit of the motor itself. If you have to upgrade injectors, etc, then so be it. That is a tiny fraction of what it will cost you to turbo it.
    • GTSBoy
      Starter motor replacment teeth count.

      By GTSBoy · Posted

      Measure voltage at the starter solenoid terminal when the key is at start and it has clicked. If it is really low, then the suspicion falls on the ignition switch (contacts or wiring thereof) as causing a voltage drop instead of sending enough volts to throw the solenoid all the way to engage the starter itself. If it is a decent voltage, then the suspicion is on the solenoid. Might have s horted coil, or might hva dirty contacts. Rip the starter off, dismantle, clean up contacts and inspect winding. It might not be possible to see if there is a short in the winding though. I have a spare starter here that I could measure the resistance of the coil, as a guide to about what it should be, if you need a comparison. <parts hoarder>No you cannot have it.</parts hoarder>
    • oHBoy.
      Starter motor replacment teeth count.

      By oHBoy. · Posted

      lights are on just the one click.  
    • GTSBoy
      Mistakes were made, my R34 Story

      By GTSBoy · Posted

      Absolutely matters because, while a temperature change will eventually reach a sensor at the end of a static line, the response time is far far far too slow to be useful. Might as well not have a temp gauge at all.
    • f00stx
      Anyone running the VQ37VHR with forced induction?

      By f00stx · Posted

      When I was eyeing off the 370GT (after deciding I didn't want to spend 30-40k+ to relive my early 20s in an R33) I thought it'd be a good project to add a turbo to it. Now that I have a 370GT, and I've had a couple of chances to open it up, I'm pretty stunned by how much power it makes 🫠 Honestly, the way the VVEL opens it up, it almost feels like there's a little turbo tucked away in there somewhere. It's like Nissan looked at VTEC and said "hold my beer" 😁 Has anyone thrown a turbo into their 370Z or 370GT? Is there a conservative boost level you can run without having to upgrade the fuel system, or are bigger injectors and a bigger pump a given?
×
×
  • Create New...