Originally Posted by RXtacy

^ The block off plates come with a plate for the pipe as well.

I have not heard of deleting the ISC with the PFC, it seems counter intuitive to me as that is the solenoid that the PFC auto body part would need to use to control idle conditions. I'm sure you can set your idle under certain conditions with just the set screw and throttle plate adjustment, but then there would be no way to change it for different load conditions aka A/C and headlights etc...