Jump to content
SAU Community

Recommended Posts

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

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 :)

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.

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...

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

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 :)

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.

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


  • Similar Content

  • Latest Posts

    • Have a look at that (shitty) pic I posted. You can see AN -4 braided line coming to a -4 to 1/8 BSPT adapter, into a 1/8 BSPT T piece. The Haltech pressure sender is screwed into the long arm of the sender and factory sender (pre your pic) into the T side. You can also see the cable tie holding the whole contraption in place. Is it better than mounting the sender direct to your engine fitting......yes because it removes that vibration as the engine revs out 50 times every lap and that factory sender is pretty big. Is it necessary for you......well I've got no idea, I just don't like something important failing twice so over-engineer it to the moon!
    • Yup. You can get creative and make a sort of "bracket" with cable ties. Put 2 around the sender with a third passing underneath them strapped down against the sender. Then that third one is able to be passed through some hole at right angles to the orientation of the sender. Or some variation on the theme. Yes.... ummm, with caveats? I mean, the sender is BSP and you would likely have AN stuff on the hose, so yes, there would be the adapter you mention. But the block end will either be 1/8 NPT if that thread is still OK in there, or you can drill and tap it out to 1/4 BSP or NPT and use appropriate adapter there. As it stands, your mention of 1/8 BSPT male seems... wrong for the 1/8 NPT female it has to go into. The hose will be better, because even with the bush, the mass of the sender will be "hanging" off a hard threaded connection and will add some stress/strain to that. It might fail in the future. The hose eliminates almost all such risk - but adds in several more threaded connections to leak from! It really should be tapered, but it looks very long in that photo with no taper visible. If you have it in hand you should be able to see if it tapered or not. There technically is no possibility of a mechanical seal with a parallel male in a parallel female, so it is hard to believe that it is parallel male, but weirder things have happened. Maybe it's meant to seat on some surface when screwed in on the original installation? Anyway, at that thread size, parallel in parallel, with tape and goop, will seal just fine.
    • How do you propose I cable tie this: To something securely? Is it really just a case of finding a couple of holes and ziptying it there so it never goes flying or starts dangling around, more or less? Then run a 1/8 BSP Female to [hose adapter of choice?/AN?] and then the opposing fitting at the bush-into-oil-block end? being the hose-into-realistically likely a 1/8 BSPT male) Is this going to provide any real benefit over using a stainless/steel 1/4 to 1/8 BSPT reducing bush? I am making the assumption the OEM sender is BSPT not BSPP/BSP
    • I fashioned a ramp out of a couple of pieces of 140x35 lumber, to get the bumper up slightly, and then one of these is what I use
    • I wouldn't worry about dissimilar metal corrosion, should you just buy/make a steel replacement. There will be thread tape and sealant compound between the metals. The few little spots where they touch each other will be deep inside the joint, unable to get wet. And the alloy block is much much larger than a small steel fitting, so there is plenty of "sacrificial" capacity there. Any bush you put in there will be dissimilar anyway. Either steel or brass. Maybe stainless. All of them are different to the other parts in the chain. But what I said above still applies.
×
×
  • Create New...