We all like to breathe clean air. Heck, most of us drive 4x4s so we can get out of the smoggy city to enjoy nature and the fresh air that we find there. We’re not about ruining the world or poisoning our planet, but we do have some problems with the way certain states limit what we may do to our engines to get more power. We thoroughly support the notion that the government shouldn’t care what’s under our hood as long as what’s coming out our tailpipe is within spec. Until they come around to seeing things our way, here are some tips to help you slide past the sniffer.