does any Melbourne shop take, for example, an VQ35 and test out nearly every turbo setup on it? both singles and twins? as well as other components including cranks, pistons, rods, gaskets, and everything in between? DO they do this with nearly every engine and every car?
Racepace build amazing cars no doubt, arguably the best in Australia but I highly doubt that they puts as much R&D into every setup possible as Top Secret would, thats why the Japanese are the masters of the game, they put the money into testing different ideas, if they blow an engine or crash a car big deal, their budgets can absorb it quite easily.
and if my car needed a retune and I had the time to take it down to sydney hell yes I would take it down to Smokey