Casey...if you want to test it out w/o buying..the locals could get together some time and we could put my 3.4 on your MPS if you have the INTENSE setup.

Your PCM will move around the octane tables depending on frequency and degree of knock. You will not want to drop pulley sizes unless you have 0 kr and get max timing about 15-17 degrees depending on conditions. If you are getting 0kr and say 10-12 degress of timing you would not want to drop down.

Either way as mentioned before you will be using the highest octane you can get.