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My pipe connecting my Turbo to my intercooler Popped off ?!?!?! Opinions+Help please

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xXEclipse

10+ Year Contributor
470
1
Aug 30, 2010
Montrose, California
Driving my 98 Eclipse back from the shop, the mechanic said im boosting 15-17 Stock turbo. Well on the ride back the pipe connecting my turbo to the intercooler came off from the intercooler side. Mechanic said that if i floor the pedal, that the boost will spike past 17 and the pressure is making the pipe come off.. Does that sound right? Anything else it could be? He says my wastegate is all the way open and he cant lower the boost anymore unless i get a new manifold and external wastegate, please help guys. He says basically i cant floor my pedal.. Any help is appreciated.
 
No, crappy pipes and crappy couplers and clamps will do that. And regarding boost creep, a 3" downpipe allows much greater flow after the turbine so the gas is less likely to go through the wastegate because the turbine offers so little resistence (lack of backpressure).
 
And regarding boost creep, a 3" downpipe allows much greater flow after the turbine so the gas is less likely to go through the wastegate because the turbine offers so little resistence (lack of backpressure).

He is correct. Exhaust gases follow the path of least resistance if it is down the exhaust and not through the wastegate, then that is where it will go. So basically, at ~10-12 psi your wastegate opens but the exhaust keeps going though the turbo and down the exhaust because it is flowing better, which is why your boost keeps rising to 15-17 psi. Boost creep.
 
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