I was wondering the truck I just bought has no cats just straight pipe back to the magnaflow. the mods I know of are 2.80 upper,6lb lower,cai,plenum,and a ported stieg. is not having cats hurting power or does it matter? should I get some universal high flows and have them welded in or just get stock ones? the few time Ive hammered the truck the boost gauge shows around 11lbs just for reference.