ultra heat problem
HD is doing a voluntary adjustment, so called 0903 letter.
to remap the ecm for fue/ air mix and timing.
This will help it run cooler.
Or you could do as other suggested above
stage one download, SERT, PCiii (and others)
install heat shields www.rjsoriginals.com
turn on the a/c or perhaps relocate about 2 000 miles north west.
I hear outside temps there are a little cooler, that might help.
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