Strange that so many people have a problem with Paul's system and the heat. Had Hanso's tune on the bike and it worked out fine. Pipes did get a little hot during the summer in stop and go traffic. Running Claviger's tune pipes are running a lot cooler this summer. Was not much of a issue before but now i do not even think about it. A good tune can make a major difference. Yes it gets very hot during the summer in Oklahoma. 90 degrees plus and very high humidity can be almost unbearable at times. Another factor are exhaust leaks. Even a small leak can make a major difference. Granted they are naked pipes but believe if tuned correctly and no exhaust leaks the pipes work out fine. Not saying your bike is not tuned correctly but it is worth checking out. May work may not. Every time I wash the bike we do a soap test on the pipes. Spray bottle and paint brush. Have not found any leaks since adding double washers to stock acorn nuts. Prior to doubling up washers had a problem with leaks ever so often. Just thought i would share a bit of tribal knowledge.