Hey guys, heres something I noticed today on my car. Its currently stored cause of the winter months. I fired er up and let it run and idle for a good 15 minutes. Before I shut it down, I was under the hood checking a few things, and I noticed that the drivers side header was glowing cherry red. Not really the individual pipes, but moreso the collector. I was in a poorly lit environment, so this is probably why its the first time I noticed this. Since ive never actually seen this before, I wanted to know if this is normal, or does this mean that there is some kind of resitriction in the exhaust somewhere. Any insight would help. Thanks...