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i have headers plus a 3" TTi X.Pipe System with the long Dynomax Super Turbos. Cars is packed with Raamat and Ensolite foam. Everything is fine as long as i have at leas one side of windows shut. As sonn as i open all the windows i have a very bad drone – but only at idle speed (makes me hate stoplights)



Mine drones at 3000rpm. Almost want to jump out the window (while the cars moving). Right now I solve the problem by slowing down to 55MPH (2500 rpm). Over the winter I'll change the mufflers out to Ultra Flows. Had them on the Charger without tail pipes and there was absolutely no drone.