4JJ3 Tuning: D-MAX, MU-X & BT-50
Engine and supported automatic transmission tuning for the 3.0L 4JJ3 platform, including towing and everyday drivability.
View 4JJ3 tuning →Technical Knowledge Base
Technical Library
Practical vehicle tuning guides, ECU and transmission information, professional programming resources and workshop technical support from South West Tuning Co.
Vehicle Tuning Guides
Land Cruiser 200 Series
Complete 1VD-FTV engine, automatic shift and converter calibration for everyday driving, touring and towing.
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ZF 8HP Transmission Tuning
Shift, torque-management and converter calibration for supported ZF 8-speed transmission applications.
View ZF 8HP tuning →Professional Tuning Tools
Professional ECU Tuning Tools
Choosing the Right Platform for Your Workshop
A practical guide to professional tuning platforms, Master and Slave workflows, OBD, Bench and Boot programming, subscriptions, support and workshop setup requirements.
Read the guide