Custom made wiring harness for Lexus GS300 compatible with MaxxECU Race, MaxxECU Race Gen2 or MaxxECU Track Gen2.- OEM ECU can be removed.- MaxxECU Relocated under driver seat for a clean and simple installation.- Specify injectors and ignition type- Support OEM Drive by wire or aftermarket.- Specify intake and throttle type. We do offer custom DBW Pedal kit for complete throttle cable removal.- Cruise control working- Boost control valve (valve not included)- Wiring for Water Meth control- OEM Fan Control- A/C ControlCAN to MPX Module Not Included. We're working on a solution but it's not available yet!Extra harness included:- 8HP Transmission harness with wiring for sequential shifter*** MADE TO ORDER *** 3-4 weeks production delay.Core harness might be required depending on the setup.