A VQ35HR already makes 255-265whp on the Dynojet, depending on tranny. Like Trey already pointed out, G37 coupes are already showing 280whp and that's with the big wheel and huge brake packages. Expect slightly higher numbers without all that rotational mass.

 

In terms of indicated hp numbers from a particular model of dyno, going from lowest to highest:

Mustang/brake dyno---->Dynojet---->Dynapack

The difference in HP between each dyno with a G could be as much 40whp.

 

That's impossible, especially if you have a RWD G35 5AT. I hold 3rd the entire run in 1/4 mile my car sees 99.3-99.9mph in the 1/4 mile. Seeing that your MPH is an average over the last 66' of track, my car is probably crossing the line at a true 101mph. Doing the calculations and it makes total sense assuming the gear ratios, tire height, and redline. At 6600rpms, the 5AT RWD with the 3.3 gear should see ~102mph. I tap the limiter just after crossing the line.

 

Another thing I forgot to add about why the 7AT will be quicker is that the 7AT locks up in the lower gears and stays locked at WOT in 2nd+ gears. That means the tranny will not have significant torque converter pumping losses and will behave just like a manual with a direct connection to the motor. That's a pretty big deal. The 5ATs will only lock up in the top of 3rd and above.

 

Okay maybe I'm confusing this, but I thought you all were referring to manual mode of the 5AT. When I'm driving on that setting, I hit redline near 90??? Still learning this car, and engine!

 

Bro, 07-08 G35 dyno between 260 and 270 whp bone stock. Mine dynoed at 264, and 230 ft-lb.

G37s dyno in the around 280

 

Coupe

http://www.dragtimes.com/Infiniti--G37-Dyno-Sheets.html

Sedan

http://www.dragtimes.com/Infiniti--G35-Dyno-Sheets.html

 

That's funny, it seems like the only dyno numbers I trust is from this link since Terry is legit and definitely is NOT a fanboy by any means

https://g35driver.com/forums/tech-07...rning-gtm.html

243rwhp....I can find links too guys, it's not that hard to use a search button you know...and like I said before these are not some BS dynojet numbers...dynojet numbers are good to test a product and see what kinda gains you get, but definitely not stock hp numbers

This is a dyno of terry's car at GTM, it isn't some random G35 sedan horsepower numbers you found on some random google search either

from my estimation equation of bhp / 1.28 = whp => 306 / 1.28 = 239.0625...seems like this equation came pretty close to terry's STOCK numbers...dunno where you guys keep getting 280rwhp on our sedans from...keep dreaming

 

dyno must've been broken...either that or they wanted you to feel good about spending $100 doing a dyno on a stock car

 

In that first post there are two dynos listed, one from a dynapack and one from a dynojet.

The dynapack eliminates the tire/roller interface by bolting straight to the drive wheel hubs.

The dynojet is an inertial based dyno where the car is responsible for accelerating a fixed mass drum.

Consequently, neither dyno will produce equivalent numbers.

And you're smoking something if you think there's a 28% powertrain loss.

 

Also, in one of my earlier posts in this thread linked to a dyno at Forged Performance. Sharif sports a dyno dynamics dyno - yet a third dyno for your "equations."

The fact is that after all my bolt-ons, I dyno'd 266whp on a dynojet. Half an hour later, my wife's bone stock 07 6MT put down 267whp on the exact same dynojet.

Back up two years, and my car put down 241whp bone stock on a dynojet. You can dismiss dynojets all you want, but in the end it's just a number. Regardless of dynos, your gains are solved by the simplest of equations:
gain = after - before. In my case, my gains amounted to 25whp.

That means that my wife's car, bone stock, peaked at 1hp greater than my car *after* I enjoyed a gain of 25hp to the wheels. By extension, at the wheels, her stock 076MT overpowered my stock 056MT to the tune of 26whp.

Using a drivetrain loss of 17%, that means that her car was making 31.3hp more at the crank, stock to stock.

Using your drivetrain loss figure of 28%, that would put her car making 36.1hp more at the crank, stock to stock.

So you tell me, and throw out your confused dyno mumbo-jumbo: is Infiniti's 07 6MT crank figure of 306hp underrated, or is Infinit's 05 6MT crank figure of 298 overrated? Because no matter which figure you choose, 17% or 28%, the numbers just don't add up.

Let's face it. You're out of your league in dyno world. Come back after you've dyno'd you car a 100 times like I have.

 

Didn’t Nissan claim that the new GTR transmission was “Ultra efficient”? Something like 12% loss instead of 17%. They claimed that is why the GTR makes 480 Hp at the crank and something like 422 at the wheels.

Is it possible that the new G37 transmission is that efficient? If so then the gas mileage should be much better also.

 

Just think how much faster the Akebono equipped versions would be with 2pc oem 14" rotors vs the stock 26lb rotors and a set of early forged coupe 19s. Probably talking off 10-15lbs of rotational weight here.

 

My car produced 240whp prior to uprev tune...i have fast intentions intimidator exhaust with HFC, mrev 5/16th spacer, K&N typhoon short ram intake... after tune.. i was at 260whp.. Good gains for those amount of mods? what is average for those amount of mods? 260whp = about 319 bhp? eh... i have 07 coupe 6mt. dyno dynamics btw..
next is strupp headers.. i have em.. just have to install them... i heard around 20hp gain midrange??? True or false??

 

I accept with information:The current 6mts are geared very similarly as the pre 07 autos. 1st 35-40 mph 2nd close to 60 and 3rd gear goes all the way to 100mph which is just too long for a V6 motor. Hopefuly 7at ratios will allow a extra gear from 60-100mph and the car will become much quicker.
The IS350 has identical acceleration as the current G35s. IS350 can do sub 2.0 60ft on stock tires for some reason...
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