MINE'S GT-R exhaust makes 501 hp at the flywheel
Eric Hsu, one of the many men behind XS Engineering and also a veteran of A'PEXi and Cosworth, got a hold of the February 2008 issue of Japan's Option magazine in which the pub strapped the MINE'S-modified Nissan GT-R to a Dynapack and ripped off a couple of runs. The GT-R was equipped with the prototype catback exhaust we featured a couple of weeks back, and although the design is far from streetable in its current form, it still created just over 20 hp over the stock setup by reducing backpressure and allowing a 1.42 psi increase in boost. Although Hsu maintains that the Dynapack might skew the results by up to five-percent, the 507.9 ps (500.95 hp) rating at the flywheel is still impressive considering that nothing was done to the GT-R's ECU.
[Source: JDM-Insider]
Reader Comments (Page 1 of 2)
HotRodzNKustoms 7:42PM (1/07/2008)
That sounds like a believable gain on a turbo car. The GT-R's V-6 is one of the most impressive around.
Slap some I
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HotRodzNKustoms 7:43PM (1/07/2008)
it messed up some how:
Slap some I heart JDM stickers on that baby and we'll see 1200hp+ Dyno pulls at the wheels!
SPF 8:04PM (1/07/2008)
Come on, you know a sticker only adds 10-15 more hp, don't be ridiculous.
paul34 8:38PM (1/07/2008)
No, SPF - if it's a true JDM sticker from the JDM, then we'll see some gains like that. If its only a cheap eBay knockoff, then we'll only see 10-15 HP extra.
If you get the stickers that have the carbon fiber vinyls on them, though... well... let's just say that you'll probably never get traction with that insane beast you'll then have.
SPF 11:05PM (1/07/2008)
OMG, Paul, I didn't know that, so I put 10 stickers on my car for nothing. I could just put half of a I heart JDM sticker on and get the same result? OMG, OMG. I'm going to effing kill myself.
PandaBeat 8:05PM (1/07/2008)
What the hell happened with it making 480hp AT THE HUBS? (which would've meant that it was actually making around 550HP - STOCK)
I don't get it.
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sachin 9:50PM (1/07/2008)
that dyno is at the wheels, not sure why they keep on saying flywheel
Damon Lavrinc 11:42PM (1/07/2008)
They apply a correction factor on Dynapacks to get the flywheel hp.
NT 8:04PM (1/07/2008)
approximately anyways.
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JR 8:34PM (1/07/2008)
Wow they really must be hurting for sales for the fact FLYWHEEL is 480, then marketing morons made those values at the rearwheel.
Now at whopping 20 HP flywheel gain with a non stock exhaust, damn with a 15% drivetrain loss the end results are tire ripping !
Save them some money, jack around with the correction values or yank down on the tie down straps and you'd gain 50 HP with no changes to the car :-)
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Tragedy 8:50PM (1/07/2008)
I'll be seeing that car next week at the Tokyo Auto Salon! Yay!
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3000GT TwinTurbo 8:51PM (1/07/2008)
...so why the hell didnt nissan do this in the first place? When you pay as much as you do for a car like the GTR, I would expect that they squeezed every last drop out of things like the intake, exhaust, or any other parasitic component.
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Pouya 12:39AM (1/08/2008)
There are cars that came with titanium exhausts stock, but I can see many reasons why Mines could "improve" on Nissan's exhaust setup
1. Emissions
2. Exhaust sound level (perhaps even exceeding the legal limit)
3. Cost of titanium and the specific conditions required to weld it
4. Perhaps longevity
pete 1:21AM (1/08/2008)
most stock exhaust systems are rather restrictive to reduce cost, emissions, and sound. a good aftermarket exhaust is expensive, freer flowing, and louder.
cwcentral 12:12PM (1/08/2008)
I bet just removing the cats on the OEM setup instead will produce more power than this aftermarket system--we're talking dyno-numbers here.
Now real-world benefit is in the eye of the beholder...
Yar 9:50PM (1/07/2008)
LS7 Swap.
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catgirlshyla 5:24AM (1/08/2008)
Go back to /o/.
Punkcrisis 12:20PM (1/08/2008)
LS7 swap is the worst remark I have ever heard, I have here the new copy of car and driver with the zr-1 vette in it as well as the gt-r and stock versus stock the gt-r is fast and $30,000 cheaper to boot give me one of those exhaust to go please!
why not the LS2/LS7? 10:15PM (1/07/2008)
This kinda casts doubt (like any was needed) on those who said the car made 473HP (480PS) at the wheels.
480PS at the flywheel is damn good, and Nissan says they'll find the extra 1.5% needed to ensure it makes a good honest 480HP at the flywheel in the US.
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EMC 11:16PM (1/07/2008)
it was at the hub, rather than at the wheels, but yes... it does seem that they might have "calibrated" it a big high