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911st 911st is offline
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Join Date: Jan 2004
Location: Sacramento
Posts: 7,269
Below is an interesting uTube video on that Compressor Boost Valve mentioned above compared to a normal blow off valve.

I found that taking this approah along with fast reduction in conrol pressure upon acceleration and the righ AFR's made a big differance.

The BOV only opens to release boost on overrun to keep the compressor from dammage.

The other valve stays open letting boost past to keep the turbo spinning in reserve at idle and cruse and closes when boost is needed.

This is simmiler to wha I did on my C2T by changing the orientation of an adjustable CBV and playing with the spring tension. Mine was actually much faster. The advantage to the new system is the amount of air if may flow. My set up fit the standard Bosch CBV fittings.

Old 03-06-2009, 05:14 PM
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