So far I have had a stock turbo and a TE-44 turbo. The stocker had a high-pitched whine at spoolup, the 44 had a loud SHHHHH...I'm going to upgrade to a PT61 turbo and was wondering how that turbo will sound and how do the larger turbos sound? I run an ATR 3" downpipe and dump pipe with 2.5" Hooker exhaust/aerochamber mufflers