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and cant figure out where its comming from. I thought it was a boost leak but in the back of my head I thought it might be the tranny. It whistles loud when ive got the idle kicked up to 1800rpms while in park. My fried said it sounded like a tranny whine when he heard my truck on the dyno. Any ideas? ive checked all the intercooler tubes for leaks and couldnt find anything. I had the intake off installing a boost stick. I wonder if its worked its way loose?
 

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Did it start when u installed the stick, the turbo will whistle much more with the stick installed? What kind of boost numbers are you seeing with your stack and the stick?
 
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