|APS has obviously had to develop custom manifolding arrangements for each turbo, as well as a full 2.5in cat-back stainless steel exhaust system. The twin pipes eventually meet at a combined back box, which splits into the hallmark 350Z twin tailpipes exiting at the rear.
The inner wing-mounted high-flow induction kits are also clearly visible under here, too. Buried deep in the front wheelarches, these are well isolated from engine and turbo heat, although caution must be taken when driving through deep puddles or standing water, so as not to suck any of the wet stuff into the engine, which could lead to disastrous results.
Meanwhile, with more air being pumped into the engine, the fuelling has been totally overhauled to cope with the uprated demands of the twin turbos. This means a new 255-litres-per-hour in-tank pump, braided lines, Sard pressure regulator and six 380cc injectors. Injection control remains under the watchful eye of the original ECU, as is ignition timing and variable valve timing. However, as there is no function on the standard ECU for boost pressure control, this is managed separately by an electronic boost controller, which is provided in the kit.
Finally, to aid in the reduction of turbo lag and to prevent turbo stall off-throttle, APS provides a blow-off valve. A side effect is that it also adds that quintessential turbo 'psseeu' as you go off throttle. And why not? It's never intrusive and only serves to enhance the new twin-turbo 350Z driving experience. Speaking of which - what an experience that is!
When editor Vincent drove the standard 350Z on its launch in Germany in the summer of 2004, he wrote: 'The latest Nissan coupe is one of those cars that just seems so effortless. Whatever the challenge, the 350Z faces it without flinching and just gets on with the job. This is one of those cars that somehow does everything well; it contrives to add up to more than the sum of its parts. That big, growling V6 provides much of its character but, perhaps, the biggest draw is the accessibility of its performance. The chassis is lithe and responsive and the engine wall-to-wall torque.
High praise, indeed. And this new APS-fettled G-Force Motorsport 350Z Twin Turbo is just so much better again. To summarise the feel of the new TT 350Z, take all of that quote about the standard 350Z and magnify it - twice over. Then add some - and a bit more.
The addition of this twin-turbo kit has lifted this £25K coupe into supercar-slaying territory, crucially without taking anything away from the already superb standard car. The turbochargers simply add to the 350Z's armoury, transporting it onto a new plateau of brilliance, while still maintaining all of its original appeal - just with added zest and zeal. The dyno graph shows this clearly. It's an almost exact replica of the standard car's, but with loads more power and torque available right across the rev range.
A blast out on the road soon proves it. Bury the throttle and the deep growl and burble of the V6 engine are enhanced by the induction roar and a glorious exhaust note when the blowers kick in. The mid range is simply masterful, building up to a punchy peak power pull over 5500rpm.
Meanwhile, the additional turbocharger soundtrack - with the occasional flutter of the wastegates, the on-boost whine and the hiss of the blow-off valve - makes the hairs on your neck stand on end. When you drive the 350Z with the APS turbo conversion, you wonder why Nissan didn't build it this way.