
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 →Practical vehicle tuning guides, ECU and transmission information, professional programming resources and workshop technical support from South West Tuning Co.

Engine and supported automatic transmission tuning for the 3.0L 4JJ3 platform, including towing and everyday drivability.
View 4JJ3 tuning →
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