HI and evening all if possible i need some advice on a td6 range rover there is a precat which runs from the turbo to the first main cat..the question i have is ..should the precat have something in it or should it just be a straight through piece of pipe? meaning hollow..i hope a member can...

hi all first post so hi to all here...i am doing a retrofit sat nav to my range rover 53 plate hse td6..i have sav nav unit number yik 500030..and purchased a proper wiring loom from bimmernav for the x5/range rover.problem i have is there is no plug on the sat nav unit for the ariel plug? and i...