Has anybody experienced the following? I could not find anything in a search of this forum... Pulling out of my drive way (cold engine), while accelerating... - Pop! noise - not a bang - like something under air pressure blew a seal. - Louder than normal turbo sound while driving around city speeds. - Reduced torque/power - not much more than 10%-20%. - If I'm in a higher gear when I give it gas (about 50-80%), it downshifts, but with little power, as if the tranny knows what to do, but the engine just can't deliver the power. - No OBDII Codes thrown at all. No check engine light. My first guess is that my electronic blow-off valve is somehow stuck open (hence, turbo spools up, but very low power). It is not vented to atmosphere. Why would it make a "pop" sound? Any other ideas on root cause? Would this be an easy fix? If not, would it be covered under powertrain warranty (CPO 100k mi)? Thanks. Jay.