I'm running an external GPS too. Bstig you have more grip than I do with the rcomps vs my street tires. You also have the added benefit of the seats/harnesses and more power. Not trying to slam you or anything here...was just trying to make a comparison and find out where I can improve around the track
Your time is impressive and where I'm trying to get to. Seems the biggest diffference between us is from the top of the esses where you pull away by like 4 seconds on the way to oak tree, then pull away on the front straight again.