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It look like another company got something for us. I was wondering what that black box for the vacuum hoses do?




 

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That black box is either an ECU or a turbo controller. There isn't any need for a vacuum controller.

That hose is for vacuum - or it could be for pressure too. Either way that box reads pressure to do something special.

Judging by the way that exhaust and those brakes look, it is definitely something special.
 

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It is a vacuum controller. They are using vacuum to control an exhaust valve.

Jun BL uses an electrically controlled servo to control their exhaust valve.
 

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The stock ECU already controls the exhaust valves on the Veloster. The exhaust cam bushings are in an eccentric boss that use hydraulic pressure to vary the timing of the cam. You can't use a servo to vary cam timing because it takes too much force. You can just reprogram the stock ECU to change the exhaust valve timing by changing the amount of hydraulic pressure on the exhaust cam bushing block.

The stock ECU doesn't measure manifold vacuum in order to determine exhaust valve timing - it measures airflow in the intake and Oxygen in the exhaust.

My best guess is that they are measuring turbo pressure to make it more like a mechanical BOV and exceed the ECU parameters.
 

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It's an exhaust valve near the muffler that directs exhaust either through the muffler or around the muffler in a straight pipe fashion. Has nothing to do with the motor at all.
 

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That would not be an exhaust valve then, that would be a wastegate. A wastegate is a baffle that directs exhaust either through or around the turbo.

That makes more sense since wastegates used to be sprung and are now servo controlled.

In that case that tube is sending pressure to the aftermarket turbo controller and not vacuum.
 

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importshark.com

The Jun BL exhaust in the above link uses a servo to direct flow of exhaust at the muffler. The Pico exhaust in the OP's video uses vacuum to do the same job.

It has absolutely nothing to do with the motor or the turbo at all.
 
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