Hey guys, i was just wondering, is it possible to have any engine or exhaust modifications for an automatic car. Im not that brainy when it comes to 'doing up' cars as people would call it, so could i get like..um, a bigger exhaust, or blow-off valve or somthing in it (btw, i have know idea how they work, so tell me if it is even possible to put them on an auto ). I dont realy want anything to spectacular, but atm, the car is stock, so i just wanted something to spruce it up a tad. any other ideas? (other than sound systems, body kits and wheels)?