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R32 Gtr Boost Controller Query

krayzie32

By krayzie32,
in Engines & Forced Induction

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krayzie32 Mentor

krayzie32

Posted
Posted

Ok, so i wanna remove the boost controller, as the display is f***ed and renders it useless so i wanna axe it...

Im trying to get my hands on a standard Boost solenoid for R32 GTR but in the mean time...

Can i run the GTR safely using Standard GTR Turbo wastegate actuators???

What psi rating are they???

Also where the Boost controller solenoid has "in" i figure thats where it intercepts and regulates the boost pressure to the desired boost level before releasing pressure to "out" side of solenoid then on to wastegate actuators...

So basically if i just put straight pipe in place of boost solenoid it will run only standard wastegare actuator pressure yes...

Just wanna clarify before i go down this path.

Also i found a third vacuum hose near the boost controller solenoid in similar size but it has a bolt stopping the vacuum. please can someone confirm that this hose is the BOV Vaccum hose???

Thanks in advance.

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DVS JEZ Grand Master

DVS JEZ

Posted
Posted

BOV's are on the drivers side,

the boost controller should be near the turbo's somewhere, so the vacuum line is not from the boost controller to the BOV's, but the boost controller should have its source from the throttle bodys so it reads VAC aswell as boost,

Just remove the boost controller and run the pressure line sourced from the inlet manifold to the stock actuators, when you do a road test do a couple of light runs in 3rd or 4th gear and monitor the boost levels, it shouldnt go above 10ish psi, if it keeps rising recheck your hose going to the actuators as it might be the wrong one,

krayzie32 Mentor

krayzie32

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BOV's are on the drivers side,

the boost controller should be near the turbo's somewhere, so the vacuum line is not from the boost controller to the BOV's, but the boost controller should have its source from the throttle bodys so it reads VAC aswell as boost,

Just remove the boost controller and run the pressure line sourced from the inlet manifold to the stock actuators, when you do a road test do a couple of light runs in 3rd or 4th gear and monitor the boost levels, it shouldnt go above 10ish psi, if it keeps rising recheck your hose going to the actuators as it might be the wrong one,

ive seen plenty r32 gtrs with standard bc solenoud on drivers side behind/beside relay/fuse box

line comes from plenum to solenoid from solenoid to actuator...

Third line i think is bov vacuum

just wanna confirm before i f**k things up...

Moodles2 Grand Master

Moodles2

Posted
Posted

The thing about boost controllers is they can't use the factory manifold source as is it is already bled, always have to blank that source off and run a new hose from another (non-bled) source on the plenum. If you use the factory boost solenoid with the EBC's manifold source, you will only see 10psi (actuator pressure), not the full 14.7psi you would see with the restrictor removed and using that hose that was connected to the bled source.

krayzie32 Mentor

krayzie32

Posted
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So here can i find a goid non-bled source for manifold pressure???

Havent done much tinkling with rb26s

saying that i can go from plenum straight to t-piece then to wastegate actuator and itll be safe???

Owens Rising Star

Owens

Posted
Posted

What would be the standard stock boost PSI for a R33 GTR?

I'm thinking of disconnecting my boost controller and putting it back on the factory solenoid. Whoever installed the blitz boost controller was kind enough to leave the factory solenoid intact and mounted the blitz solenoid next to it.

  • 3 weeks later...
GTsauRus Community Regular

GTsauRus

Posted
Posted
The thing about boost controllers is they can't use the factory manifold source as is it is already bled, always have to blank that source off and run a new hose from another (non-bled) source on the plenum. If you use the factory boost solenoid with the EBC's manifold source, you will only see 10psi (actuator pressure), not the full 14.7psi you would see with the restrictor removed and using that hose that was connected to the bled source.

I have a motor just out of a stock as a rock r32 half cut so i got to transfer my blitz ebc hoses onto it and this is how its piped up.

the hose that has the restrictor near the boost solenoid connects to the hard pipe that goes around the back of the head that feeds both actuators this hardpipe has a welded tee connected to a hose that goes to the bottom of the inlet plenum opposite number 6 inlet this hose also has a yellow band with you guessed it a restrictor. THe second hose at the solenoid connects to a second hardpipe that goes around the back of the head and connects to the bov recirc balance pipe between the turbo inlets so basically this is where the boost pressure bleeds back to.

On my existing motor the tee under the plenum is blanked off and its plenum connection has a hose that goes to the ebc motor the second ebc motor hose connects to the hard pipe to the actuators and the second hard pipe is blanked off under the plenum so this setup does not bleed back to the turbo inlet.

The hose that goes to the bov's comes from the manifold under the plenum that has the aac valve on it.

Didnt know the second restrictor existed til now because my gtr always had the blitz ebc.

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