bond1318

How To: Manual Boost Controller

254 posts in this topic

It is easy to get to.

Remove heat shields.

Remove retaining pin holding wastegate arm.

Remove 2 bolts holding wastegate to compressor housing.

Remove wastegate.

Adjust arm.

Reattach.

MBC might hold 30psi but your turbo can't produce that...

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MBC might hold 30psi but your turbo can't produce that...

oh i know, i was just saying that the MBC can do that and i know others on here produce more than 12.5psi with the 12T which makes me think that something might be off about my set up. but im not sure on what it could be

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Now are we tightening it? Making it held slightly open? Or are we trying to show more threads? I've always questioned how to do this

Less threads showing means the wastegate actuator has to push further to open the wastegate.

Further it has to push to open = more boost needed to open = holds more boost.

oh i know, i was just saying that the MBC can do that and i know others on here produce more than 12.5psi with the 12T which makes me think that something might be off about my set up. but im not sure on what it could be

Possibilities:

- Wastegate needs adjusting (as xcites40 suggested)

- Bypass valve ("BOV") leaking

- Some other boost leak

- Damaged turbo

- Exhaust leak before turbo

- Clogged cat causing exhaust backpressure

Most likely one of the first two.

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