Single Plane M1 P4452898
On my old 360 I lost 1.5 tenths by switching from an Eddy Airgap to an M1 single plane. No other changes. Same mph, but the quickest I could ever get it to run was 1.5 tenths slower than the best pass with the Airgap. The torque loss was also very noticeable during street driving. Going with the Airgap was a good choice, IMO.