Does any one reccomend any air intake systems? I am looking @ the AEM brute force HD system @ xtreme diesel.com and they carry all the major brands and they reccomend this one because it does not have to be oiled Just bucket washed as they call it and placed back in the truck in a hour the system filters down 1 micron does any one have any gains in fuel economy using these systems or I am throwing $328. 00 away thanks Matt 2007. 5 Qc dually 4x4 Laramie Leer cap Banks Dual monster 6 inch exhaust avs door handes and bores door handle and tailgate trim husky liner floor mats factory moonroof and nav