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Had my 05 4.2i GU dyno tuned by Townsville Mechanical Services yesterday. Good blokes and did a great job on the Patrol. It is a different car to drive.
Attachment is the before and after Dyno.
EGT are about 30-40 deg cooler at 100km and pickup once the turbo spools up at 1500rpm is great. Its no duramax but it'll do for the moment.