>1700 degrees - 1490 degrees? .ddn coulomb.eng.ohio-state.edu(diy_efi) I run a turbo on my 5 liter ford. I have been told by the experts (Duttweiler and Bell) that 1650 degrees at WOT is fine. Turbo temps will log about 200 degrees hotter than a NA vehicle Pat PDONLEYCOTT @ VNET.IBM.COM