US Spec GT-R weighted and dynoed

[ATLsupra]

The owner of the GT-R has less than 100 miles on it, and took in for a weight test and dyno.

3875lbs. The car is a Premium with Ipod jack, floor mats and 3/4 of a tank of fuel.

Dyno results 422.8 AWHP
413.8 AWTQ

[BennyBlanco]

interesting nice find

[JeremyBlackwell]

The torque curve looks very odd. It spikes torque, then falls off a bit, then gains more torque...I wonder why?

[Kickhard]

could be the operator

[008]

Weird cross weights.

[JeremyBlackwell]

The only way it could be the operator is if they partially lifted the throttle by accident, or spun tires (which shouldn't happen.) I'm pretty familiar with Mustang Dynos and tune on one regularly, and it shouldn't be doing that. I wonder if possibly the AWD bias changed a bit and the dyno was set properly for that? The Mustang dyno I tune on is only 2 wheel drive, so I haven't messed with the software settings on that one. On a Dyno Dynamics, you have to specify a couple variables when using AWD to ensure it reads properly.

[Kickhard]

The only way it could be the operator is if they partially lifted the throttle by accident, or spun tires (which shouldn't happen.) I'm pretty familiar with Mustang Dynos and tune on one regularly, and it shouldn't be doing that. I wonder if possibly the AWD bias changed a bit and the dyno was set properly for that? The Mustang dyno I tune on is only 2 wheel drive, so I haven't messed with the software settings on that one. On a Dyno Dynamics, you have to specify a couple variables when using AWD to ensure it reads properly.

That could be it also. But that TQ reading is all over the place spiking up and down alot compared to the HP line. Seems to me the car itself was maybe adjusting the TQ to compensate for the rollers setting being off a bit
You do have to input a few variables into the Dyno Dynamics AWD in order to get a good reading. We have one here so I know. I have dynoed my E55 on it