I like the sound although it is not very pronounced. It sounds more like chirping than wooshing, but maybe, that's just me.
A few questions, if you don't mind...
- So, are you running richer (perhaps a worse mileage, too?) as others say?
- Do you have to purchase a WRX or STi-specific mounting kit for SSQV?
- Does the installation require a ECU reset?