Hey there guys.. just got my stang back, with my new 3.90 gears and JMS Chip.. and all I can say is wow. I can easily chrip them thru second and the giddyup is just amazing, and yes I have an automatic. Love the new mods. One qucik question though... I know of the dreadful 'humming' noise that some gears can cause, well while idling and crusing (35-40 mph) I can hear it very faintly, but it's not screaming. Is this alright or will it cause me a problem? While stomping on it they're quiet so I'm almost 100% sure there's nothing wrong. Also, I noticed after these mods that when I begin to brake, by car seems to jerk a little to help stop more and I'm thinking it's from the stiffer shift points that the chip brought on. Let me know what you guys think. Overall, very please with the new performance, much faster out of the hole. Thanks a lot guys.