How do I run wastegate pressure only?

That spinning thing that makes all of the cool noises. OE and Aftermarket.

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macipusy
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How do I run wastegate pressure only?

Post by macipusy »

What is the correct way to route the vaccum hoses to run on only wastegate pressure?

I know to run a hose from the turbo outlet nipple directly to the wastegate actuator and bypass the MBC altogether.

What do I do with the hoses at the MBC, just cap them off?
Last edited by macipusy on Mon Jul 13, 2009 4:02 pm, edited 1 time in total.
maciek puszynski

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vrg3
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Post by vrg3 »

Yes, that's correct. Just run a short length of hose directly between the nipple on the compressor outlet and the nipple on the wastegate actuator. 1/4" hose should be the right diameter.

If you have an MBC, I would just remove it from the car. But, if for some reason you can't, then, yes, capping off the nipples is probably a good idea. Most MBCs have 1/4" fittings on them, so you'd need 1/4" vacuum caps.

If you're running stock boost control, remove the hoses that lead all the way to the stock boost control solenoid and cap off both side fittings on the solenoid (one will use a 1/4" cap and the other a 3/16" cap).
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macipusy
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Post by macipusy »

Sweet...thanks
maciek puszynski

01 Impreza | v6 STi RA | 5mt | ej236t
93 Legacy Turbo | TW | 4eat | ej22t
16 WRX | 6mt | fa20
98 Legacy GT | wagon | 5mt | ej25d


2.36L Turbo - RSTi Build
fasttrifive
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Post by fasttrifive »

Now saying the turbo is good. How much boost should you get pike this theroetically speakin??
mexicanzero
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Post by mexicanzero »

i assume youre running thes tock turbo?
i beleive 5 or 6 psi... its beena while
-Alex
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fasttrifive
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Post by fasttrifive »

Now another question. How much boost is stock with the factory boost controller. I have heard 7ish mine is at .06-.08mpa??
ericem
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Post by ericem »

should be around 8.9psi
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mexicanzero
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Post by mexicanzero »

8.9psi is equal to about .061 mpa i think so the .06 is right on. but .08 is over 11 psi so i dont think you should be seeing so much.... but then again i'm not too educated on how the bcs works really...

-Alex
LIVE LOUD, ROCK HARD!!@

1992 Subaru Legacy SS 06 WRX TMIC TD-04 MSD coil 3" turboback H&R coils GR2 shocks fsb 20mm rsb 22mm stage 2 chip

2003 silver wrx wagon 5 spd just bought!! stock for now...
fasttrifive
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Post by fasttrifive »

Not sure if it makes a differance but I live at 5400ft above sea level. Thanks for the info guys
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