The pipe sensor actually doesn't make heat. It senses pipe temperature and adjusts the timing curve accordingly so in effect you get the most crisp throttle under a variety of pipe temps. I think there are 5 different timing curves it chooses from. So supposedly even on a cold pipe you can get good performance. I know that on the 440 the sensor actually has some effect on the exhaust valves also. At least is't supposed to. I don't know if it effects the exhaust valves on the F5. All the sleds would benefit from this feature.
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