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Boost Restrictor?

Triskillion

By Triskillion,
in Engines & Forced Induction

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Triskillion Collaborator

Triskillion

Posted
Posted

does the rb25det have a boot restrictor in a hose like the sr20's? if it does have anyone out there removed this and with good or bad results??

one guy on the nissansilvia forum went from .5 bar to .7 bar just by removing that one hose

is if it works with good results id do it!! any tips?

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https://www.sau.com.au/forums/topic/110769-boost-restrictor/
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justin911 Grand Master

justin911

Posted
Posted

yeah it does have a restrictor.. if i recall correctly its the pipe on the left of the T connector thingy near the boost solenoid.

does the rb25det have a boot restrictor in a hose like the sr20's? if it does have anyone out there removed this and with good or bad results??

one guy on the nissansilvia forum went from .5 bar to .7 bar just by removing that one hose

is if it works with good results id do it!! any tips?

justin911 Grand Master

justin911

Posted
Posted

to the left of the power steering fluid theres the black metal pipe which goes to the intake.. you'll see a rubber hose coming off that pipe.. and then the hose will probs connect to a T connector.. then off to the boost solenoid.. or something like that.. anyways that rubber hose coming off the black metal pipe is the one with the restrictor in it.. you can feel it with your hand..

most ppl replace that hose when they install a boost controller..

i wouldnt get rid of the restrictor btw.. unless i needed to.. cause stops your car from overboosting and all :dry:

paulr33 Grand Master

paulr33

Posted
Posted

its not a restrictor at all. it in fact allows more boost to run in the factory setup. its a dual stage boost solenoid. which switches to a higher setting at a certain rpm. removing it will take away the dual stage which means youll always be at 0.50bar regardless. with the boost solenoid in place it is switches to 0.70bar after 4500rpm. there is however a hack to make it always be 0.70bar

Craved Grand Master

Craved

Posted
Posted

the hack is to use the std boost solenoid to run the 7psi instead of changing it from 5psi to 7psi.. dunno how to do it myself.

manual boost solenoid.. removes the std nissan one. and you set the boost you require and leave it.

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