try washing the 4r first. if that doesnt help, have a bottle of MX-7 handy. ive never used it on my truck, but it did wonders on my friends miata. be sure to get the one for paint and not glass.
thanks. im thinking of picking up some hellas. my friend who works at a car audio shop said theyre pretty loud, and easy to install as wellthe stock horn is loud, but i just want something louder because hawaii drivers tend to merge right into you for some reason. ill def post up the...
im thinking of putting in airhorns, but i dont know where to start. ive checked google and yahoo but i cant get any reviews. any recommendations? i want it to be really loud.