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navig. extra weight?

616 Views 12 Replies 8 Participants Last post by  TEG
I remember reading this earlier from a post... does the navagation unit add that much extra wait to effect speed? how much is it?someone had said taht people are adding extra stuff to the IS and blaming them for their IS lacking speed...
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yeah but if we tried to get it under 3000lbs it wouldnt work right? like if we stripped the car and took out the insulation and stuff, it would be lighter but the weight distribution would be out of wack so in turn woulnd't the car drive differently (no neccessarily better)?
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