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Boost controller

After some work on my engine, I have reconnected my boost controller (Profec E01) : with BC off, I reach 20 psi !

NC is connected to compressor outlet, COM is connected to the WG top port and WG low port is connected to intake manifold.

 

I have tried different places to take the boost (intake manifold, compressor outlet, ...) or tried 2 different places for the low and top ports, but no difference.

 

The 3 solenoids ports (COM, NC and NO) work perfectly.

With BC off, NC is really closed : I have to disconnect the WG top port to reach my natural WG preset ~10 psi.

Why do I have 20 psi when I simply connect WG top ports to the closed NC port ? It's crazy !

 

I have try all the combinations, please help....

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    • Featured Replies

    You want the COM connected to the compressor outlet or another point at the same pressure (normal is the bottom of the hard pipe to the throttle body).

    The NO should be connected to the wastegate and the NC left vented. Assuming these are stock type wastegates, not externals?

  • Quote

    No sorry, I have dual port external wastegates on TD05-16G.

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