I have a 2015 GT-R Black Edition, FBO 93 pump gas. I essentially have an SBD700 (but without upgraded fuel pumps, and on their discontinued 3.5" exhaust system). My power mods are as follows:
I just got back from Kozmic Motorsports here in Houston, Texas. I was on a Mustang 500-AWD-EURO dyno, which has a reputation here for giving very low numbers. I did three pulls on Slot 2 (18 psi) and three pulls on Slot 3 (18 psi), a somewhat more aggressive map. All pulls done in 4th gear and on Shell 93 pump gas.
Attached is my Dyno Sheet (corrected) with the highest pull from Slot 2 and the highest pull from Slot 3, overlayed on top of each other. I think you can ignore the AFR and Boost numbers below the graph....the shop didn't hook up a wide-band O2 sensor so not sure how the dyno thinks the AFR was 9.8 and my boost was 19.2 / 19.6...maybe some calculated value. Anyway, here are the results:
Slot 2 (18 psi): 521 HP; 480 ft-lb
Slot 3 (18 psi): 522 HP; 488 ft-lb
Kozmic said that if I were on a Dynojet, I could expect to see maybe 10% higher numbers, so that would put me around 574 HP and 537 ft.-lb.
Videos:
[media]https://youtu.be/_7ek7Po0CMI
What do people think about my numbers? Seems low or seems about right?
Slot 2 and Slot 3 log files attached, below.
Bosch EV14 1150 cc Injectors
SBD 3" Intake
SBD 3" Catless Downpipe
SBD 3.5" Catless Non-Resonated Midpipe
SBD 3.5" Street Spec Exhaust
Stock Fuel Pumps
Cobb Accessport NIS-008
E-Tune from Tim Bailey
I just got back from Kozmic Motorsports here in Houston, Texas. I was on a Mustang 500-AWD-EURO dyno, which has a reputation here for giving very low numbers. I did three pulls on Slot 2 (18 psi) and three pulls on Slot 3 (18 psi), a somewhat more aggressive map. All pulls done in 4th gear and on Shell 93 pump gas.
Attached is my Dyno Sheet (corrected) with the highest pull from Slot 2 and the highest pull from Slot 3, overlayed on top of each other. I think you can ignore the AFR and Boost numbers below the graph....the shop didn't hook up a wide-band O2 sensor so not sure how the dyno thinks the AFR was 9.8 and my boost was 19.2 / 19.6...maybe some calculated value. Anyway, here are the results:
Slot 2 (18 psi): 521 HP; 480 ft-lb
Slot 3 (18 psi): 522 HP; 488 ft-lb

Kozmic said that if I were on a Dynojet, I could expect to see maybe 10% higher numbers, so that would put me around 574 HP and 537 ft.-lb.
Videos:
[media]https://youtu.be/_7ek7Po0CMI
What do people think about my numbers? Seems low or seems about right?
Slot 2 and Slot 3 log files attached, below.