I just installed mine on sunday ... Yeah I had to move the horn. I placed it on the bonnet hinge bolts.. The wired will reach it you unclip one of the tyes...
IT took me 7 hrs to install the kit but that because I took my time painted painting the cut surfaces so it wont rust and trying to do a nice job... I forgot to get my camer and take pictures but I will take a few picture after my camera is charged an post them up...
I got an extra 1 psi and really noted the difference after I reset the ECU... if I take off like a grand ma, first gear starts spinning the wheels after 4000 rpm and spins most of second gear little chirp in 3rd.. Once I start playing with the boost then I should see some action...