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preturbo EGTs are extremely helpful for setting your timing curve. post turbo EGTs are a waste of time and effort.
EGTs need to be digital and logged. as an example i had been doing a number of dyno runs and focusing on 1550-1600 at one bar on up.
i looked at my 0 to one bar EGTs and found them to be in the 1200s.... even though my AFRs were fine.
we added timing in that area and brought the EGTs up to the high 1400s and picked up a bunch of midrange... all the while the AFRs did not change.
your really would never been able to do that watching a gauge... BTW, i have had some experience w Greddy EGT gauges (2) and found them to be slow acting and not accurate. i literally gave them away for shipping.
fixturing a proper EGT setup is neither difficult nor expensive but you do need a Power FC/Datalogit or something similar.
howard coleman
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