I just went for a short drive after changing plugs and wires on my 308. When I got home I opened the engine compartment while the engine was running and noticed that the headers(where you can see them) at the sampling fitting was glowing red. This was at all 4 aft fittings. I never noticed this before but then again I don't remember looking at it running at night. Just looking for some reassurance that all is well. BTW...the new plugs and wires made it run much better that it was. Thanks!