i recently bought an acura tl 04 and decide to throw in a k&n cold air intake and took off the battery but i dont have the manuel etheir n it got locked i have the s/n and the code for the stereo but no navi can any one please help.?

 

Take it to a dealership, they'll get you the Nav code.

 

you could try opening your glove box and looking on the outside left of it. I know that my codes are taped there the dealership did it for me