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Message: <blockquote data-quote="Lanter" data-source="post: 1426723" data-attributes="member: 20552">How do you know the WG isn't working, if you haven't made boost pressures over the spring pressure is will stay closed.  Or is it opening prematurely?  Some guys run it to the intake, not ideal but it will work.  You really should tap into the compressor cover or close to it.  There is also a company that makes boost reference source fittings that go into the silicone boot. <a href="http://www.atpturbo.com/mm5/merchant.mvc?Screen=PROD&Product_Code=ATP-FTG-010&Category_Code=BCS" target="_blank">http://www.atpturbo.com/mm5/merchant.mvc?Screen=PROD&Product_Code=ATP-FTG-010&Category_Code=BCS</a>2.  If the wg wasn't letting off pressure you'd see boost pressures up above 20psi is my guess, unless you have a massive boost leak from a charge pipe not being connected or something similar.  If the wastegate doesn't open that means all the exhaust gases are forced to go through the turbine side of the turbo.  If this is the case the gases spin the turbine wheel which is connected to the compressor wheel so that also spins up to greater and greater speeds.  When that happens the compressor wheel sucks in more outside air and compresses it which then is forced into the engine, assuming all the piping is connected from the compressor outlet to the throttle body and no big boost leaks are present.3. You're saying the bov spring is to weak but have you tested it.  Actually have you done any suggested diagnostic tests.  I.E. compression test, boost leak test, vacuum test on BOV, pressure test on WG??  You got to diagnose stuff before throwing parts at it.4. restrictive mufflers can cause issues but not enough to explain no boost being generated by the turbo.</blockquote>