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Strange Whistling noise under boost (leaky DV??) hi All, I am having a strange whistling noise when I am under boost, please take a look at the video below: https://www.youtube.com/watch?v=mgY8yDVP9x8 I have a custom exhaust system, stock intake, and Rev D Diverter valve. can anyone tell...

Custom Valvetronic exhaust (UPDATED with video!) hi All, I have some connections in the auto business, and i was able to get this valvetronic mid section at a reasonable price. it's not exactly cheap, but compares to all the other valvetronic exhaust systems out there like IPE and Armytrix...

hi all, I've been having black smoke coming out of my tailpipe for the last few summers, and here are the symptoms. I would be crusing for awhile at 40ish on freeway, and when i want to accelerate in D, right before boost and down shift, a metallic rattle sound is heard from the exhaust pipe...