Hello fredygump,

Hará San use F 1x4/1.4x4, Mugen 9.5-1.6, 600cst and R 1x4/1.4x4, Mugen 10.75-1.6, 500cst.

For me as I'm running HB D817, I readjust the setting a bit, F 1x4/1.4x4, 8-1.5, 550cst and R 1.1x4/1.5x4, HB Yellow, 550cst. When I use the same 1x4/1.4x4 Piston at the rear with 100cst lower oil than the front, the Rear end felt had too much pack. So, I made 1.1x4/1.5x4 piston and put same oil as the front to get similar pack between front and rear.

Interestingly, in Hara San's Car, even though He is using same Piston Configuration, the "Pack" of His car felt the same between Front and Rear. I'm still think that the Wide Rear Pivot Point/Short Arm Configuration makes the same piston configuration setting give "not too far" Pack feeling between Front and Rear.

Please kindly share Your opinion..

Cheers..