1382* is packing alot of heat. Most of the time you start to loose valve seats in production between 1300-1400 Thats really hot. The turbo zetecs are running much cooler mid to low 1200 in toms 400 whp t3/t4 hybrid.probably need more fuel or reduce boost or if it also can be caused by excessive retardation of timing. Could advance ignition timing if its been retarded signifigantly. Cant help but think youv got a little detonation going on. IMO anyways. i cant think of a case where your exhaust gasses should reach 900 degrees c 1652 degrees f is way too hot. You hit that and your engine is already gone
