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radroach · 02-16-2017, 11:22 PM

@MrDinkleman what I believe you're hearing is the VVT changeover. It's noisy. Sometimes to the point you'll hear absolute rattling during it if you're in the wrong throttle/load scenario.

[ame="https://www.youtube.com/watch?v=9t4QtTmfBsA"]Vortech FRS VVT Angle Comparison | P2 - YouTube[/ame]

My guess to why we have a sound generator on our cars it to cover that sound with intake note instead. This engine just has a lot of valvetrain noise, along with the clicking injectors, and lots of other stuff that makes noise constantly, and these noises are way more noticeable to the driver in a normal daily driving environment than in a track scenario.

02-16-2017, 11:22 PM	#3
radroach Senior Member Join Date: Feb 2013 Drives: car Location: usa Posts: 2,162 Thanks: 1,028 Thanked 867 Times in 530 Posts Mentioned: 35 Post(s) Tagged: 1 Thread(s)	@MrDinkleman what I believe you're hearing is the VVT changeover. It's noisy. Sometimes to the point you'll hear absolute rattling during it if you're in the wrong throttle/load scenario. [ame="https://www.youtube.com/watch?v=9t4QtTmfBsA"]Vortech FRS VVT Angle Comparison \| P2 - YouTube[/ame] My guess to why we have a sound generator on our cars it to cover that sound with intake note instead. This engine just has a lot of valvetrain noise, along with the clicking injectors, and lots of other stuff that makes noise constantly, and these noises are way more noticeable to the driver in a normal daily driving environment than in a track scenario. Last edited by radroach; 02-16-2017 at 11:48 PM.