When I bought my Transformer edition it had the same noise they said it was a broken exhaust baffle and after getting in several that were bent up on the tail pipes they finally replaced it and the noise went away for awhile. After a road trip of 400 miles it came back now they say it is a known problem with the 4-6-8 system and will not fix it. Same problem same noise but after 5 assemblies they say I have to live with it. What the heck over 40 g's and I have to accept it. Not me I'll be back till they fix it.
