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99-LS1-SS
02-06-2009, 05:34 PM
These numbers are better than I thought!

http://www.g8board.com/forums/showthread.php?p=164228#post164228
Blackrider
02-06-2009, 06:04 PM
wow nice numbers.
blackbirdws6
02-06-2009, 06:05 PM
Solid numbers but I'm not really surprised. I expected over 360rwhp. I'm pretty surprised the magazine goons haven't gotten this car into the 12's yet and over 110 mph with this kind of power.
R.Penguin
02-06-2009, 06:11 PM
These numbers are better than I thought!

http://www.g8board.com/forums/showthread.php?p=164228#post164228
Indeed!
GTPprix
02-06-2009, 06:13 PM
Huh? I've had two on a dyno already, one months ago LOL
GRRRR8
02-06-2009, 06:15 PM
Huh? I've had two on a dyno already, one months ago LOL

Your back finally!
GTPprix
02-06-2009, 06:16 PM
Oh, yeah I'm around LOL
GeorgeInNePa
02-06-2009, 06:31 PM
Solid numbers but I'm not really surprised. I expected over 360rwhp. I'm pretty surprised the magazine goons haven't gotten this car into the 12's yet and over 110 mph with this kind of power.

The launch is the hardest part, some of those guys just aren't that good.

;)

Also, the A6 is going to suffer from the same problems as ours.
Mike P
02-06-2009, 06:43 PM
Wow, those are some really good numbers. There is no way I could have waited for a GXP, but now I want one! :)



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xfactor
02-06-2009, 07:02 PM
Awesome numbers. It solidifies my decision I made today. Yeap, you guessed it I put money on a PBM M6 GXP. Should have it in a week. But I am high jacking this thread (Sorry 99-LS1-SS, just excited!). I would like to see what the numbers would be with CAI and HSRK (based on the temps comments).
Steve
02-06-2009, 08:21 PM
Wow, those are some really good numbers. There is no way I could have waited for a GXP, but now I want one! :)



...

same here! guess a Cam is in order now to keep the gxp's at bay ;)
99-LS1-SS
02-07-2009, 01:11 AM
But I am high jacking this thread (Sorry 99-LS1-SS, just excited!).

Me too!!!!
Mike P
02-07-2009, 06:12 AM
same here! guess a Cam is in order now to keep the gxp's at bay ;)


Yep, definitely! :)



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Darkside
02-07-2009, 07:09 AM
Dyno numbers are nice and all but can be misleading. Lets see some track times, and I don't want to hear any excuses about not being a good shifter out of anyone.
G8GXP4now
02-09-2009, 09:31 AM
So 70HP over a GT? And another 20 or so if it is tuned. WOW!

That more than the intake/tune most thought was needed to keep up with the GXP.
foreosu
02-09-2009, 10:28 AM
Wow, I am quite impressed. Looks like the money spent on a GXP is well worth it then. I was kind of on the fence, but those are some bad ass stock numbers. Definitely better than I thought.

Looks like it'll take a lot more power to bring a stock GT up to a base GXP!
racerns
02-09-2009, 10:58 AM
Dyno numbers are nice and all but can be misleading. Lets see some track times, and I don't want to hear any excuses about not being a good shifter out of anyone.

I agree with this. One thing people forget is that the GT with the auto tranny does not have a true 1:1 4th gear (M6 4th is 1:1) and when you dyno in 4th you are really at 1:1.15. I believe that this "hurts" the dyno numbers of the GT. GTPprix tested an auto GXP and got 355 rwhp STD correction which would be in the mid to upper 340s rwhp using the SAE correction factor. Those results are more in line with what you would expect for a 54hp engine increase from the GT to the GXP. I think we are going to have to remember this when we compare dyno numbers from the GT and auto GXP with the M6 GXP as it is really not an equal comparison. If the gearing was equal the auto will usually have a litte more loss than the M6 but it is not as much as the dyno is telling us with the different gears. The extra loss is due to difference in the gearing causing a different measurement method.
Ktlplxm
02-09-2009, 12:19 PM
Just wondering, but has anyone thought about taking into consideration the octane requisite of the 2 models? Since the GXP is already tuned for 93 (at least as far I know) it shouldn't have as dramatic of an increase from tuning as the GT. After all, the primary reason the GT benefits so much from the tuning is the amount of timing that can be added once you switch fuels.
LDV60
02-09-2009, 08:28 PM
The GenTT crew in Adelaide have done a mild cam in a GTS with LS3 (M6). This retained the standard springs etc. 57rwkw (75.2rwhp) increase over stock from memory.

Given the driveline is the same in the GXP I'd imagine you'll see the same benefits over there too.

The LS3 is just a bigger and badder starting point. Makes me jealous too. Not that I mind my LS2 too much.
bigtreepu
02-10-2009, 05:32 PM
Yep, definitely! :)



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Ditto that...When will the mod fairy visit my house. She hasn't been yet, and it's pissing me off. If the wife doesn't come through for my birthday, I may well have to purchase myself. I gave her Christmas and still coal in the stocking.
~Matt