Turbo/Diverter Valve Noise - Normal?
I recently installed a CTS Turbo intake and Turbo outlet pipe on my 23 S3, and definitely more induction noise but it's different than I expected. Previous MQB Cars I had would let off more of a flutter/compressor surge type sound when letting off the gas with boost loaded. In this case it's more of a straight up venting air- "pshhhh", like a more typical blow off valve sound. Is this normal? Were my previous cars' diverter valves not working? Any experience would be helpful, as I don't necessarily think something is wrong because no boost leaks found and it's a pretty simple install, more just curious.