New PB! A huge chunk found in our latest run, all with the help of fresh tyres. Went with a set of Kumho V730s and boy did they make a difference. Improving by 5 seconds on my first attempt and then finding another second by the end of it. Relatively stock car with full interior and sunroof but here are the full list of changes that have been made:

Engine & Drivetrain:
Stock Engine and ECU
4-2-1 HKS Exhaust Manifold
Apexi Power Intake Filter
Ogura Super Single Clutch
255Lph Walbro Fuel pump
5.1 Final Drive
1.5way LSD
Titanium exhaust catback

Chassis and Handling:
Hardrace adjustable rear Toe arm
Cusco adjustable front upper arm
Final Konnexion Stealth Suspension (shot)
UCF20 Front Brake caliper
Bendix metal king titanium Pads
Steel braided brake lines
Kosei K1-TS 17" rims
Kumho V730 235/45/17 tyres