First off I would like to say that the following dyno is for two different G35's....one stock, one modified. I know there is room for error between with the two cars but it is what it is. Same dyno, same day, not 10 minutes between the two runs.

Stock G35: 05 Sedan, 6MT Revup, BONE STOCK!
Modded G35: 06 Coupe, 6MT Revup, mods below:

K&N drop in w/ z tube
PowerLab 3/8" spacer
Motordyne MREV+
Motordyne XYZ pipe w/ resonated section
Nismo y-back exhaust
Osiris (not tuned yet, this was the initial dyno)

it's a bad pic, sorry, I'm still trying to figure out how to put TQ and HP on a single graph. When I get home I'll post the raw data files, max TQ increase is close to 40ft-lbs, max HP increase is a little over 20. I love the new midrange power. Hopefully the Osiris retune will get me a little more topend power too. This graph is consistent with Tony @ Motordynes graphs regarding the MREV, it shifts the power curve to the left to give you more "usable" power. I'm very pleased with the mods thus far.

 

I just dyno tuned my "osirized" 03 G yesterday (gotta get the chart scanned) and had similar results. They wouldn't even run it with the stock map, as that map is way too lean for my mods (CAI, spacer, and exhaust). I will say that my car now feels a little scary to drive hard. I'm kind of glad my 90K miles 03 is not taking a back seat to the newer Gs...