You would have to argue how far they really have dropped the ball Matt. One of our latest discussions over on the dark side revolves around a stock unopened engine manual VU ute (exhaust, filter, tune etc) that just ran 12.3 @ 114mph, Heathcote last Saturday. Thats getting there!
There wont be any secrets in the tuning. Will let you know if you are seriously interested. Real big horsepower cars are generally pretty manageable on the dyno. Just strap em tight, and lay in the boot. Cest la vie.
The factory computer though? Work of art. Makes ANY aftermarket system look like rubbish. Whats it do? Off the top of my head......
Wideband mixture feedback, positive pressure fuel and ignition tables (both high and low octane), programmable outputs (revs vs load vs temp), twin sensor knock retard (programmable attack and decay), long and short term fuel trims, adjustable injector scaling (able to cope with 8 x 1000cc injectors), closed loop idle speed control, twin cooling fan control, programmable traction control inputs, adjutable rev limiter (versus engine temp) for each gear, programmable shift light, decel fuel cutoff control, full auto trans pressure and shift control (should you not have a manual), 300 or so different error reporting levels, snapshot data logging, lean cruise algorithm, catalytic converter overtemp protection......and thats part of it
Best part is you can buy these computers for about $200 from spares shops