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Click above for a gallery of the HKS Nissan GT-R GT570.

Serious Nissan GT-R tuners aren't coming out of the woodwork – yet – but one of Japan's largest aftermarket firms has thrown its hat into the ring, and to good effect. HKS will begin offering its GT570 kit to consumers in Japan later this year (no word on U.S. distribution) and as it's name implies, output is getting close to the 600 hp mark. The package includes new wastegate actuators for the stock turbos and an electronic boost controller, along with aluminum intercooler piping, silicon hose couplers and straight pipes that replace the stock catalytic converters, reducing back pressure, but negating the GT-R's road-legal status.

All of those tweaks add up to a total of – you guessed it – 570 PS, or 562 hp and 540 lb.-ft. of torque at the wheels. Check the gallery below to see the dyno charts and a few shots of the wastegate and plumbing mods.

[Source: SSH and HKS via 2009GTR]

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    • 1 Second Ago
      • 6 Years Ago
      I wonder how much power it'd make with the cats. I prefer to keep the cats. Replace them with high flowing units, but at least have something there. I love making huge power and understand how much can be held back with turbo vehicles, but I'd never run straight pipes on the car on the street (which I'm sure most customers will do).

      Flamesuit on!
      • 6 Years Ago
      so looking at the one pic of the straight pipe replacements for the cats....why does it come from two Downpipes it one pipe then back to the exhaust then split back into two pipes after muffler for looks?

      routing may be the reason this isn't possible but i would think twin pipes from the DP back to the tips would be beneficial for more power (better breathing)
        • 6 Years Ago
        HKS makes a dual-titanium exhaust for the GT-R.


        But apparently it doesn't do much if they aren't including it in their kit.

        The catalyst must have been the choke point in the exhaust.
        • 6 Years Ago
        A few reasons, one being weight-savings. Beyond that, most of the companies putting out GTR exhausts are using Ti. Merging to a single pipe keeps prices from getting too absurd (not that $6k is by any means reasonable...). Also, if you look at the exhaust channel in the underbody, there isn't a lot of extra room for a second pipe. And lastly, you'd have to modify the under tray to accommodate the additional plumbing.
      • 6 Years Ago
      Anyone else notice that torque curve? There's over 500 lb ft available from about 28k rpm to about 55k rpm. Nice meaty powerband. And to think that's just with your standard breathing mods. I love turbos...
        • 6 Years Ago
        562whp ~ 660bhp if you believe Nissan's 15% drivetrain loss.

        And C&D claimed 420whp for 2 GT-Rs tested on the dyno.

        So a solid Stage II will net you 140+ whp. Not bad.
        • 6 Years Ago
        Typos on the rpms... can't be 28k & 55k... but you guys know what I mean. ;)
      • 6 Years Ago

      and also, most of the aftermarket is using the stock-sized 70mm pipe (in titanium). Some are going all the way to 80mm but thats the biggest I've seen.

      But they all know that people are looking for 500+whp when they do a turbo-back exhaust.

      So clearly the max flow rate on these 2 turbos doesn't exceed what a single 70mm pipe can handle.

      Now when people start doing turbo-upgrades with higher flow rates, a wider pipe or duals may become necessary.
      • 6 Years Ago
      What's scary that it's only the beginning...
      • 6 Years Ago
      Hey not cool I sent this tip in yesterday and I get no shout out. I'm insulted.
        • 6 Years Ago
        Yeah well I'll thank you AB style....

        Thanks to Carlos for the Tip!
      • 6 Years Ago
      Godzilla sure does look good in all black!

      Corvette owners, just turn in your Vette for a Prius now and save yourself the embarrassment out on the road.

        • 6 Years Ago
        I suppose you are right.
        I guess my frustration lies with Nissan, and the electronic nannies and features aimed at reducing tunability.
        • 6 Years Ago
        Taken this long? The GT-R started selling in the US on July 7th.

        By that time, Japanese aftermarket companies already had springs and exhausts for it. Here's a list of the companies:

        Powerhouse Amuse
        Top Secret

        Cobb released their ECU tuner on August 22nd.

        Nismo released their (expensive) kit on August 29th.

        HKS released this kit on September 4th, less than 2 months after the car could be purchased here.

        You could have bought upgrades for any GT-R purchased in the US the exact same day on GT-RR.com

        This thing has taken no time at all to tune in the US. What kind of rediculous time constraints are you expecting them to meet?
        • 6 Years Ago
        @ pmiddle,

        he's nobody's spokesperson. don't overgeneralize.
        • 6 Years Ago
        Why did this have to turn into a flame war?
        • 6 Years Ago
        Taking this long?

        You're joking right? This is NOTHING compared to the forced induction offerings for the 2006+ Miatas. We are just now seeing the first Cosworth kits shipping a couple weeks ago.
        • 6 Years Ago
        Thank you for making import fans look like chimps.
        • 6 Years Ago
        Sure Todd...I'll trade in my Vette for a Prius as soon as you buy a GT-R. ;-)
        • 6 Years Ago

        I think that was just so Nissan would be the only one who knew the codes. That way they could charge a rediculous premium for their Nismo parts and there would be no alternatives.

        Fortunately, Cobb among others were able to outsmart the computer geeks at Nissan. So now there is plenty of competition. :)
      • 6 Years Ago
      you know, the criticism and snarkiness is really tired. i can't help but feel we're in a golden age of cars. the new american muscle cars, the gtr, the veyron, hybrids, good looking hyundais, unbangled bimmers. it's good to be alive right now.
        • 6 Years Ago
        If fuel were cheap, there would be no room for argument here. Damn OPEC!
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