Didn't know it was a stock cam. I would probably get either or, if not both manis and cam. Do you atleast have a lml Manifold on it
FWIW, I am driving the truck to Las Vegas this weekend, lots of elevation changes, so will get some good information on EGT's.
I highly doubt changing the exhaust will help much if any. Have you tried different gauges? Do egts climb fast and then stay steady or slowly climb to their peak at say the end of a quarter run? Any idea what your intake temps are?
Wrap time?
I do as well. I tried the CTS when I had it, but after going through 5 different egt probes due to Edge's junk development, I didn't get a solid readings. They climb steady. The only intake temps I know of are based on the MAF, which is irrelevant