after bypassing it and grounding the green wire to the ground/black wire my navi shows me a little off the road for example if im in the right lane i will be a little to the right off the road, and also my speedometer option will not work anymore it just says this function is not available. any suggestions?

Did you connect the VSS wire?

bypass woldnt have anything to do with that. but i notice you didnt mention moving and grounding the mute wire