[joemathews]

Make sure all of your belts are tight like RiceRocket says. It could be any of your 3 power belts found on the on the driver's side. Another possibility is you could have dropped something into the intake hose as as you were removing the snorkel and cutting it. If this is the case, your turbo is probably not going to be happy about sucking up a piece of plastic/metal/wood/etc., and could be causing the noise. First step is check your belts for tightness and adjust the mounting brackets accordingly.