Don't think the G3 does Matt.

Cable throttle is an open chequebook job. Looked into this with mine and it seemed too hard - Unless you can get hold of some Spec C gear - Even then, $$$$$.

Edit: Forget doing anti-lag cheaply. It's going to cost you to set it up, and more than likely cost you in damage/increased wear and tear.

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TD06 - Oink.