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#4: 12-20-2012, 12:04 PM
 
 Spec B
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Title: JDM tuner wanna be
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Location: Central NJ
Car: 2011 Lexus ISF
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Leaks are more common when you are running an aftermarket Up/I have not heard of a lot of issues with the stock up pipe.

You can look for soot/carbon build-up on turbo/up connection or the up/exhaust manifold connection...not sure if there is an easier/better way.