Set a new PB, but mistakes were made. Optimal shows a 1:52.39 was possible. However, there are some subtle mistakes from my previous best, a 1:53.04, and some setup adjustments for the new tires that have me prett sure there is even more time than the optimal shown. 

Changes from previous PB are: 91 tune to optimize the header and exhaust and running the Vitour P1's, 245/40-17. With the tire change, I noticed the car was suffering from some mid corner on push. Pictures show that I'll need to adjust the front sway bar to a softer setting to help eliminate that.

Mod list:
• Power
JDL UEL Header 
Remark/OS Giken exhaust
91 Octane Tune
• Suspension/handling
JRZ RS Pro coilovers tuned by Shaftworks USA
Karcepts front and rear sway bars
Karcepts offset UCA bushings. 
OS Giken LSD tuned by Shaftworks USA 
Powerflex Differential mount inserts
• Brakes
Factory Brembo package 
Counter Space Garage C1X pads
Project Mu brake fluid
• Wheels
Titan T-R8 or Apex SM8rs, both in 17X9
• Tires
Yokohama AO52 or Vitour P1, both 245/40-17
• Safety
Blackbird Fabworx roll bar