In Nevada it's only in some counties they have any smog tests on any vehicles. Out here in the sticks, Which is most of Nevada, we have no smog.
Just yesterday I installed a MBRP 4" down pipe back system, eliminating the cat. It tripped the SES light. Drove it 140 mi. light still on, got up in the morning to take my wife to work no light. Picked her up from work no light. All is well in Winnemucca.
2004.5 2500HD CC/LT/DA 4\" Tuff Country lift, 295/R75/16- on 10\" Centerline Wheels w/caps, AFE Stage II w/ProGuard 7, 4\" MBRP downpipe back exhaust, ICI Wheel to Wheel Nerfs, and a little bit of Get-up-and-GO.<br />2005 Weekend Warrior SuperLite 32\'5er Toy Hauler.<br />2004 Polaris Ranger 6x6. I haul it around to go where the truck won\'t go.