The car is a 1991 3000GT VR4 twin turbo. Currently it is a slightly modified V6 DOHC 6G72. Has fuel upgrades (pump, injectors, plumbing), turbo upgrades, valvetrain upgrades (stock cams). It still retains the complete factory ECU setup with MAF-T (MAF to MAP fuel conversion & ignition adjustments) piggyback to run the current setup. We are planning to go full standalone to modernize the electronics on the engine which will help with better tuning and driveability. The engine uses a cam angle sensor on the rear of the left intake cam. Below is a link that explains how the CAS trigger works. I also have the Factory service manual for any other information needed.