Welcome to efilive. Vehicle Interface. Engine. Transmission. Share. Knowledge is power
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Some useful links:

Pistonheads HSV  & Monaro forum

HPTuners.com - Gen 4 Tuning

HP Tuners.com - Transmission Tuning

G8Board.com - Engine Tuning

G8Board.com - Drivetrain Tech

LS1Tech - PCM Tuning

LS1Tech - Transmission

Mez.co.uk