So this weekend I adjusted the valve lashing for the first time on my 3tc. I quadrupled checkef everything so I know its set to what BRD racing(cam manufacturer) told me to set it at. Maybe its because I've never looked before but I'm really paranoid. Is it nornal for the header to glow at idle? Its dim enough you can only see it at night. All thats done to it is the stainless steel header, 3" straight pipe to a single chamber borla, and a mild cam. Since I adjusted the valves its running better than ever at idle though. Do you think its because its not getting any air to cool it down or do you think my timing might be a little off? It sputters(mis?) at idle when its warming up?