I got right now 2 12" Rockford Fosgate Punches in a custom ported box running a Rockford 1200 watt amp a older one they really bump hard broke my old cars windshield. Upgrading to some Rockford P3's this summer hopefully

Just wondering if you guys had any ideas on some good performance upgrades for the newer cars that are cheap?? I was thinking maybe intake, exhaust, any other ideas would be helpful.

Any of those are sweet ones or maybe a few I can throw out is CYASUKA or IOWNU but other than that they all sound pretty cool good luck to ya man.

I already purchased a line out converter box and the links you guys gave me were really helpful now I got everything set to go in soon my new Focus will have 1200+ watts of pure bass fury.

Thanks that helped but does anyone know how to wire some subs to the stock headunit?? Got a diagram on how to do it anyone?

Just recently purchased a 2010 Ford Focus SE 5 speed and was wondering if anyone knew how to install a aftermarket headunit in one yet or hook up subwoofers to it. I have asked around and havent found much of anything so was wondering if anyone of here could help me out. Any help would be much appre...