For an eternity I had mine placed into my HKS 3000 pipe, but when I removed the HKS IC Kit, I moved it into the pipe after the intercooler for it to be subjected to less heat soak. The intake manifold will also cause more heat soak. There are many pro & con arguments for where to place temperature probes within an air tract system, so just pick one that works best for you. For me, the less heat soak, the better. For the performance of the VPC "I" don't think it matters that much.