boost problem

[Shane@DBPerformance]

Run a vacuum line from the nipple on the compressor housing(if there is one) to the wastegate, or from the nipple on the elbow off the turbo(if there is one) to the wastegate, or just from the intake manifold to the wastegate.

Going from the intake manifold will give the most consistant boost from day to day, but closest to the turbo compressore housing will give the lowest boost.

It might not help, but all an MBC or BCS or restrictor or anything can do is add boost.

[chengsta]

I dont see a nipple on the compressor housing on my EVO3 big16 turbo and theres no nipple on the jpipe from the turbo. I used the 2g install kit from extremepsi.com if that helps. Only nipple I see noticable is the one on the turbo wastegate "gold can looking thing."

[Shane@DBPerformance]

You probably just have to go off the intake manifold then.

[chengsta]

Okay, thanks. I'll give that a shot and hope for the best till I get my boost controller and port my o2 housing or rather get a new one.

[Gravy]

Wait a minute, your saying you can remove your BCS by running from the compresor niple to the wg? Works on a 1g as well, correct? I started to creep again afer a port job and looking for anything simple to fix it. MBC should be on the way... damn e-bay shit. And HG is being installed tomorow.

[Shane@DBPerformance]

Normally you don't have the factory BCS in the loop after doing a different turbo, different wastegate or MBC. You can't get lower boost than going right from the turbo compressor housing to the wastegate. That is the most direct route, giving the wastegate the most amount of boost the quickest. The most boost the wastegate sees(make it open earlier), the less boost the turbo makes.

The BCS, when activated, bleeds off boost on the way to the wastegate, which makes it run higher boost. On the 2Gs, we used to remove the restrictor in the outlet of the BCS to make it bleed off even more boost and you would sometimes see 19+ psi with no boost controller.

With an MBC or EBC installed, you can't go lower boost than just have a simple vacuum line hooked up.

[chengsta]

I hooked it up from the intake manifold to the turbo wastegate like you said and I worked flawlessy. It holds 9-10psi all day long.
Well anyways, I got home from work today and my brother told me he found my Joe P MBC so tomorrow after work I'm just gonna hook that up and tune it for 15psi :D.