Boost control Solenoid rb25det

[Spazz]

Just want to know theres a barb or nipple w/e you want to call it on the line that goes from the recirc. valve to the intake before the turbo charger. where is that line supposed to go?

[Joe]

huh?the title of your thread is boost control solenoid but your asking something (i think?) about the BOV/recirc valve?

<- Confused. more info and clearer sentences please!

[Spazz]

my boost control solenoid is hooked up wrong. i got it figured out what needs to be done. On the recirc vavle, the tub that flows into the intake before the turbo, theres a barb that comes out for a vacuum line. where does that line go to? this is for the stock boost solenoid

[Bluefire]

screw the solenoid... Just run a hose from the intake manifold to the wastegate and be done with it. All the damn thing does is limit boost low rpm boost and create more unsightly vac hoses.

-Bluefire

[Joe]

screw the solenoid... Just run a hose from the intake manifold to the wastegate and be done with it. All the damn thing does is limit boost low rpm boost and create more unsightly vac hoses.

-Bluefire

actually without it you only run 5.5psi max where as you see 8psi with the solenoid.

[Kansei240sx]

actually without it you only run 5.5psi max where as you see 8psi with the solenoid.

I imagine your talking about stock? We got rid of the boost controll solenoid on my friends Z31 and used a MBC and put it up to 10 pounds.... but uh... maybe the RB's are slightly different... I havent found this out for my self on my RB25 as it isnt installed yet, but will be in two weeks...

[silent dave]

with the factory boost controller, the boost reference comes from the cold pipe to the wastegate with a tee (there is a restrictor between the reference line and the tee) going to the boost control solenoid which bleeds off pressure to raise boost. then a line runs from the solenoid to the recirculation tube to recirculate the air that was bled off back into the intake. i wish i had a better pic but all i have is this poor quality pic from a while ago of my engine bay where you can kinda see where i have an aftermarket manual boost controller in place of the stock one. hope it helps.


Modified by silent dave at 12:40 AM 12/12/2005

[Bluefire]

I dunno about your wastegate but both mine and the other 25 I built consistently boost to 7psi...

-Bluefire

[Spazz]

YES that is exactly what i was looking for. thank you dave. I know i either lost the restrictor or i threw it out ( stupid me) can i just bypass the tee and hook the coldpiep line to the solenoid to the wastegate.

[bmadd2402]

th wastegate from the manual rb25det is mechanically set to 7#. the auto is set to 5.5# mechanically, and uses the solenoid to increase boost to 7# at a certain rpm (5500?).