R33 Gtr No Boost Solenoid ?!

[schnorky]

hey guys just a bit confused

went to go take out the boost restrictor our of my mates r33 gtr to find out the boost solenoid/valve is t there, instead the two hoses are connected to eachother.

is this why he isn't runing 14psi/1 bar ??

hits full boost around 7psi

if anyone can help me source one would be gratefull

cheers

tilla

[snozzle]

i have a standard boost solenoid here that just came off my r33 gtr, i can do express delivery - name a price?

[Moodles2]

+7 on the stock gauge is actually 13.2psi if your using that as a reference, but otherwise if the hoses are simply joined together, you should see 10psi

[BoostdR]

The solenoid only controls high and low 7-9psi. Taking it out should sit it on high

[snozzle]

i ran 1 bar with my solenoid but couldnt get it to boost over 10psi without it

im now running a profec with custom vac hosing to the actuators etc, not using the standard boost control solenoid lines

[thatlbeme]

If the 2 solenoid lines were simply capped off and not joined together what boost pressure would the r33 gtr get, and what would be controlling the upper boost level. Thanks

Edited February 5, 2011 by thatlbeme

[snozzle]

pretty sure if they r both blocked off instead of joined together you will hit max boost

[BoostdR]

No that's not correct. If the STD lines are blocked it will run low boost. The solenoid opens to add a small bleed/vac to the wastegate pressure line. Closing the lines just stops the extra 2psi. You will find the valve state is normally closed. When installing an aftermarket controller new lines and routing is required to control boost over the entire range, rather than just 2psi

[snozzle]

ah yeap, that sounds right

[schnorky]

thanks for the info!

so he's only running 10psi?

if we added a solenoid would it reach 1 bar ? as the restrictor appears to be removed.

[schnorky]

snozell can you send my a pic of your engine bay interested to see how your done it cheers

[snozzle]

it will run 0.9 to 1 bar with the restrictor removed and the standard boost solenoid fitted

well i have had it setup 2 different ways

the old setup:

at the very back corner of the plenum theres a vac line going into it, that was pulled off, extended and then connected to the "actuator" port on my boost solenoid

the nipple that his hose used to go to on the bottom of my plenum was my pressure source

the new setup

\

2 equal length vac hoses going to the actuators

T'd together at the profec boost solenoid

I drilled into the bottom of the twin turbo pipe, installed a nipple and got my boost source from there

i changed from old setup to the new setup because it wasnt holding boost very well and boost curve was falling over.. 1.2bar down to 1bar, even at 1bar it was quite shakey in terms of boost control, it wasnt solid at all.

Boost control was much better with the stock boost solenoid, it would come up to 1bar and hold it there like a rock, but the only problem with it was that i couldnt go over 1bar

My tune is booked in for monday, im hoping this new setup will hold boost alot better than last time.

Edited February 5, 2011 by snozzle

[DVS JEZ]

ahh so you ended up getting your pressure source from the hot side, good idea.

let us know if it made an improvement

what ecu are you running? d Jetro?

[snozzle]

Will do mate, Yeap D-jetro