We all know about EGR valves – annoying items to be removed and disposed of immediately. Standing for Exhaust Gas Recirculation, this little gadget aims to reduce nitrogen oxide emissions by recirculating some of your truck’s exhaust gases back into its engine.
If you see a nearly-new 4x4 being modded for off-road use, what’s it most likely to be? Land Rover Defenders usually take a few years before the fun starts, and with Jeep Wranglers it’s longer still. As for everything else, it takes so long most of it’s out of production now.