Mailorder custom tune BA NA I6

[Ruger]

Hi my BA is getting some fairly serious work done to it and will be in need for a flash tune soon but i am in sydney and cant find anyone to do it.
what i was thinking is getting a flasher and using a generic tune and sending a dyno reading with afr and you could make something around that?

when it gets the tune it will be fitted with
Twin 70mm Throttle body and ported intake manifold
custom stainless tubing and twin pod's
Pacemaker Headers and 2 1/2" exhaust to twin 2 1/4" cat back
could even have underdrives but unlikely at this stage.
its an auto also
I have been told with the intake manifold and tb setup it will work fine at idle and wot but will dump a whole heap of petrol at part throttle due to the vacuum

Thanks heaps!