Have to respectfully disagree on a lot of that.My V&H shows little glow too when the bike is ridden like it should( 0ver 5000rpm) for a longer period - not just a quick 1/4 mile run. I take that as a result of a well built engine with a decent power output, not at all as a design fault of factory.
EGT directly relates to exhaust gas velocity, in that as the exhaust temperature rises, the gas moves at a higher velocity. With an internal combustion engine , the EGT will rise as the engine makes more power (or as the air/fuel mixture leans out, but I don´t see Gevarliks situation that way). Some builders even wrap the turbocharger with insulating hood to get the higher EGT to boost the power even more.
On a carbureted V8 engine I used slightly larger air jets (Weber IDA carbs) for warmer mid summer days to lift up the EGT a tad to gain more power. On the dyno session that street driven L88 engine - by the way -heated the Hooker headers up so intensely I was thinking they will melt down and slither to sewer . The headers were over red glow and almost yellow at WOT.
So, glowing headers = Power
I'm in a shitty mood so I'll bite on this as well.Starter of this topic runs ThunderMax setup so the widebands are already there, possibly auto-tune too.