hey i just picked up a 2003 avant 3.0L, was wondering if there were any "simple" mods that could be done to increase power, ive only really heard of doing the exhaust and intake since there isnt any chips for this motor. ive read a few things about exhausts and think im interested in the magnaflow 14851 since it seems very afffordable and sounds clean and deep. any thoughts?
secondly my audio comes with the Bose Symphony sound system, i would like to replace my head unit with something newer that i can control and charge my iphone with. i was told that sometimes a new headunit can screw with the bose amp and cause noise or problems just wondering if that is actually true. also will swapping out the oem headunit for a double din screen lose me any sound quality?