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Boost controller
Posted: Wed Aug 02, 2006 5:57 pm
by 10seclux
I have a 2.8L turbo diesel hilux with a DTS turbo and have put a boost contoller on it and when i screw it the way it said to increase boost it decreases boost any ideas?
Posted: Wed Aug 02, 2006 6:11 pm
by tweak'e
what boost controller?
did you increase boost any other way before fitting the boost controller?
Posted: Wed Aug 02, 2006 6:32 pm
by BIG GQ
Logic sucggests to screw it the other way then doesn't it
Posted: Wed Aug 02, 2006 6:52 pm
by chunderlicious
some turbos dont like getting over boosted (read: screw it the other way to see how far it will go before this happens)
Posted: Wed Aug 02, 2006 7:11 pm
by ACH
BIG GQ wrote:Logic sucggests to screw it the other way then doesn't it
Logic's a fine thing Linc, but then we're 4WDers !!
10seclux, you got one of those manual boost controllers off eBay??
If so, sure you ain't got it connected back to front??
Posted: Wed Aug 02, 2006 7:24 pm
by tweak'e
even if he did get it in upside down, backwoulds and inside out ! , it should still give stock boost or max possible. unless he ripped the spring out of the diaphram then there is no way it should go lower than stock pressure.
Posted: Wed Aug 02, 2006 7:28 pm
by spazbot
if its backwards alot of then have a vent to release the pressure once its closed off. The boost pressure will just escape through the vent and and never acutate the valve to let it through to the wastegate.
Posted: Thu Aug 03, 2006 5:04 pm
by 10seclux
IT IS NOT BACKWARDS!! you have to screw it clockwise untill it stops and that is the factory setting and anti-clockwise to gain more boost but in this case it decreases boost. And i never got it off E-bay it comes from Rocket Industries. I will talk to a turbo specialist.
Posted: Thu Aug 03, 2006 5:14 pm
by spazbot
what brand and make is it ?
i take it you have it hooked up similar as follows
turbo outlet -> tpiece -> boost controller -> wastegate
and the boost guage is connected to the t piece
Posted: Thu Aug 03, 2006 8:13 pm
by tweak'e
any other info? where boost gauges are connected to?
any other work done at he same time? ie remove turbo piping (you may have a boost leak).
also what numbers are we taiking here? what was boost pressure before/after etc
Posted: Thu Aug 03, 2006 8:41 pm
by 10seclux
it is a GFB boost controller. I have turbo outlet>boost controller > Tpiece>boost gauge> waste gate. I have the gauge after the contoller just in case it may show a different reading if i have it before. I took the car for a drive before fitting the controller the boost was on 8 went 2 srews out which it said to do never made a difference which it said to go another 2 done that and the boost dropped 1psi went another 2 and it was down to 5psi got me stuffed? Any one in here fitted a boost controller to a diesel?
Posted: Thu Aug 03, 2006 8:46 pm
by tweak'e
your problem is simply boost gauge is plumped into the wrong place. it needs to be on the turbo outlet side of the controller.
infact the gauge shouldn't even be on the turbo at all. best place for the boost gauge is the inlet manifold otherwise boost readings will be incorrect.
Posted: Fri Aug 04, 2006 11:03 pm
by 10seclux
tweak'e wrote:your problem is simply boost gauge is plumped into the wrong place. it needs to be on the turbo outlet side of the controller.
infact the gauge shouldn't even be on the turbo at all. best place for the boost gauge is the inlet manifold otherwise boost readings will be incorrect.
Thanks mate that was it done it and it works