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I had a stock exhaust and purchased an npp in a box remote. you need to run a vacume line supplied with tap. simple hook up in fuse box. the best way is to tap vacume run line down behind engine use a electrical fish from back through drive shaft tunnel tape vac line to fish pull it back and run to box. It should only take about a half hour to install. The instructions are great. I am really happy with sound and you can leave it open all the time if you like.