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Discussion Starter · #1 ·
I have installed a cobra intake on stock heads and have developed a high vacuum issue at the oil filler. The vent hose form the oil filler to the throttle body must be disconnected to sqelch a high pitch vacuum noise. With the oil fill vented to atmosphere - no noise. Hook up the hose and the vacuum builds until car starts this wheezing noise. I am at at loss. Any ideas would be appreciated. Thanks Corral.
 
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