Non functioning Boost Controller

[Glen GSR III]

Hey,

I just picked up a JA to use as a daily driver and decided to fit a boost controller today.

I grabbed a $100 one from autobarn and fitted it....took it for a drive and still only 7 psi...thought i must have plumbed it backwards so i swapped it around but still nothing.

I did a search on B.Controllers and found a turbosmart diagram and mine was plumbed exacltly the same.....any ideas as to why its not working???

Thanks

[JD_Stazza_Brendan]

What brand is the one you got?

Some of them need to be wound out quite a lot before they start to come effective

[Glen GSR III]

Power up is the brand name.

[JD_Stazza_Brendan]

I had one of those. try giving it a blow out with compressed air.

[Starion_Turbo]

$100 is a bit rich for a generic boost controller, even the GFB are less than that.

[redzone]

yeah try and swap it for a GFB one if u can, they seem to be the best of the cheapies, the turbosmart seem to spike really easily (unless u modify em like i do)

[Glen GSR III]

ok update...i borrowed a GFB controller and plumbed it up...still no joy.

Also now the car will not make full boost, it goes up to around 4 psi, and seems to spike sometimes....i was thinkin maybe a leak in I/C piping but then I thought bout possibly a partially stuck open wastegate?

anyone with prior experience?

Im guessing that if the wastegate isnt shuting properly it would also be the reason why the boost controllers wouldnt work...

[Alspos]

You probably need a restrictor in the line before your tee.

I suggest a 1mm or 1.5mm hole in a slug of brass or similar. Just push it into the rubber hose.

This should help. It restricts the volume of air going to the actuuator and bleed valve, but not the pressure.

[Starion_Turbo]

what boost did you get b4 you installed the controller?

[Glen GSR III]

Al- Thanks, i'll try that.. :) In regards to the low booosting problem, do you have any ideas on that?

S. Turbo- I was getting 7 psi, although occasionly it seemed to momentarily lose power under load and go down to 5 psi...

[Cookiemonster]

Remove all vacuum sources from the wastegate actuator and carefully take it for a drive.

I say carefully because it should make boost like crazy if all is good. If it still only goes to 7psi, than you have a stuck open wastegate, wastegate flap leak, intake leak etc etc.

[FST4RD]

Those turbosmart boost controllers use a spring and ball type system.... My one didn't work either and I found the sring inside was to strong and wouldn't let the system open... i cut a coil or 2 off and it worked perfectly! I know it doesn't solve your problem but if you get the root problem sorted you might want to try that...