Confessions of an Automationeer, Part 249: Sharpening the Knife
As a continuation of my work on the 1992 Kodai Kunai, I started looking into what a more highly tuned version of it could be. However, since the donor car was already a highly capable sports car, I knew I had to make the new trim more like a supercar, at least in terms of power output. So I took the GT trim (which I had just made) and created the GT400 trim out of it.
The engine received the most comprehensive changes, developing 400 horsepower on 98 RON super unleaded (up from 276 on 95 RON premium unleaded) thanks to increased boost pressure (1.0 bar instead of 0.5 bar) and larger turbochargers, as well as a high-flow intake and exhaust (catalytic converter/muffler). A shorter final drive ratio (to better harness the increased output) yielded a significantly faster 0-60 mph time (4.2 seconds, down from 4.7), but it wasn't the only factor. Staggered tires (245/40R18 up front and 265/35R18 at the rear) wrapped in 18-inch forged wheels (to accommodate 350mm vented front disc brakes with 4-piston calipers - the rear brakes are 325mm-diameter vented discs with 2-piston rear calipers) also account for the quicker acceleration, and extra grip to go along with it. Also, by setting the weight optimization slider to its lightest setting, I saved 70kg even after installing an aerodynamic undertray (to generate additional downforce in conjunction with a front spoiler in place of the lip fixture, which was moved to the rear). Finally, I retuned the suspension to maintain the base car's sporty feel, albeit sharpened.
Above, from top: The GT400 trim takes the standard Kodai Kunai and turns it up to 11 inside and out.
Aesthetically, this new trim was distinguished by different interior materials (to better match its performance-oriented positioning), hood vents, larger frontal air intakes, a taller rear wing, wider wheel arches, and deeper side skirts. However, such giant-killing performance doesn't come cheap - with the base car having a price of $40,000 AMU, adding the GT400 package resulted in something that cost half as much again ($60,000) when new. Then again, when you consider that its performance figures put it in the top flight of its era (with only very the fastest hypercars remaining out of reach), all that extra money is guaranteed to be well spent.
There could, in theory, be even more potential lurking within the platform - probably in the form of an even more extreme road-legal trim level, or an actual race car - but for now, the GT400 serves as the ultimate expression of the Kunai line, blending agile handling with addictive turbo thrust in a shapely package that can compete with the best that the rest of the world can offer. And it does all of this at a lower cost than others in its class, in both stock and tuned forms.
What next for the Kunai line, then? As good as it is, pitting it against a Parana P600 would be too much of a stretch, given the Parana's far greater prestige. However, it might be possible to throw it into the lion's den of a future group test featuring at least one other factory or aftermarket tuned car from the same year - and if anything like that were to occur in the future, I'd be looking forward to it.






































