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Re: Stock filter Posted by Gene N [Email] ![]() ![]() ![]() In Reply to: Stock filter, Dale, Tue, 6 Feb 2007 08:46:05 Members do not see ads below this line. - Help Keep This Site Online - Signup |
Internally, the BPC has a solenoid, a piston, and a spring. The piston moves up and down in the cylinder alternately providing an air path between the center hole and the top hole or the bottom hole. The spring pushes the piston up when neither coil on the solenoid is energized so that the top passage is blocked. This is the fail-safe position so that the boost is limited to base boost when the BPC fails.
So, no, you shouldn't be able to blow in the top hole. If you had sufficient pressure in the top hole you could move the piston against the spring, and get some leak through to the center hole.
You could shake the BPC to move the piston while blowing through the top hole (with a hose connected, to the top), but I don't know what that would prove.
posted by 155.104.3...
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