Make sure the V-band clamp is lubed a little (dry lube?) so it will help the pipes settle. I think the factory procedure is lightly torque the v-band, torque everything else, then re-torque the v-band to 115 in-lbs. It also says replace the V-band clamp. I had mine come loose after the first few long drives (re-torquing in between). I then re-torque about every 1000 miles.I as well am getting the ZZP DP and Midpipe in the next two days, I don't instantly need to get a tune once the exhaust pieces are installed??