What are the symptoms of a bad DV. I ask because all of the sudden I have a rough idle when i start my engine and also after driving for a long time at a consistant RPM. I have APR chip 91 octane and forge non-adjustable atmospheric blow-off. The only other thing I think it might be is I have contaminated my air system with oil as I do not have a catch can. any help would be greatly appreciated. Thanks

-Patrick

 

Just had mine replaced yesterday at the dealer. The only thing I really noticed and complained about was the whistle above 4000RPMs at full boost. But the whistle is back, so im going forged on my DV.