I want to know how I rerout the stock bypass valve on the sr20det to make the swoosh sound?

 

the stock one will leak too much air and the car will run like crap. you need to get an aftermarket one. greddy or blitz ones are loud. all that you need to do is undo the outlet pipe from the BOV. then plug the tube that you removed so that it wont leak air. it is called vented to the atmosphere instead of recirculated....