Thanks guys, that's been really helpful. I was looking a Snow Performance kit but they are much dearer than the Devils Own. I never see much over 500 degrees with an 18ft van, my egts are much lower after being tuned by Berrima Diesel. I just changed egt gauges, from a VDO to an Autometer and the Autometer reads 40 - 50 degrees higher Go figure.. I put in a pillar pod and the VDO gauges are too long to the pod. Anyone want a cheap VDO Pyrometer? The back of the gauge is a bit of a mess (the installer went a bit feral with the soldering iron) and there are no instructions but I'll sell it for $75. I'll chuck in a boost gauge for another $25. plus ten bucks for postage