Your engine is running too lean, probably the result of either a vacuum leak or possibly a damaged EGR valve. You will damage the valves, pistons or who knows what if you don't take care of this problem immediately.
If it's glowing red you have a vaccum leak someplace, probably in the intake manifold or the engine is running lean on fuel or possibly too rich as the unburnt fuel is burning in the exhaust.
It could be running lean. Check the fuel filter. It could also be a vacuum leak or the EGR valve. It would probably be a good idea to not run it much until you've worked out the problem. There are quite a few possibilities, and some of them are not very expensive, but if the exhaust manifold is getting that hot you could be damaging your exhaust valves. If the exhaust manifold is glowing, it's not the cat-converter.
It's a turbine mounted in the exhaust manifold to give more power and smoother running to the engine.
If it is glowing red it is partially clogged or the engine is running rich.
because of the exhaust
Opening a hole us harder running through it means the work was already done
Engine is running lean.
white exhaust and rough running usually indicate possible blown head gasket.
I dirt track race and mine did it once it was because it was running to lean.
T he rest of their life.....
The Hyatt Regency has an indoor running track in Cape Coral.
blowing up.