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Update recieved my jb4 usb cord today and downloaded the software and update the future use D to 99... and wow it made a huge difference the rattle is for the most part gone completely if the car is parked and i rev it to about 2,500 and let off you can kind of here it a little but its pretty low the car feels the same tho for the most part i didn't notice much of a difference.
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