lack of boost /low boost
 

hi my name is steve i drive a 1995 850 t5r wgn was running around 15psi and would spike to around 18psi i receently notice a decrease in boost (after market boost gauge) cleaned out my intercooler(degrease) i was wondering would a clogged cat converter cause the turbo not to spool fully any suggestions.

RE: lack of boost /low boost
 

Check all the turbo hoses and the Vaccum line to the Waste gate valve.If everything is good the waste gate valve might be bad.

RE: lack of boost /low boost
 

When my buddy's A4 turbo started losing boost we replaced all his vacuum lines and hoses. It fixed the problem immediately. As for my Subaru 2.0L turbo, I found that my throttle linkage was not allowing full throttle, therefore, it never spooled up all the way. I had a special bracket welded in the help support the cable...now I have 15.6 lbs of boost as compared to the stock 8 lbs!








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