well they give a little more balance than a single pipe
and the gas problem could be soved by running this......
http://www.extremesupply.com/weaponmx/weaponmxmain.html
My friend got car jacked in Aliante. They smashed his windows at a stop sign and yanked him out of the truck. He got his truck back tho. They didn't even make it a mile down the road before getting caught