SP Engineering has installed another Greddy turbo kit on a customers R35 GT-R, and had some impressive results. 700 wheel horsepower on 91 octane fuel.

Current mods:
Greddy Turbo Kit
Greddy BOV + Pipe Kit
Greddy Intercooler Kit
Denso 850 CC Injectors
Fuel Pressure Regulator
Dual 255 LPH Fuel Pump kit (SP Engineering in house only)
HKS Plugs Heat Range 9
HKS EVC 6
HKS Resonated Mid Pipe
HKS Legamax Exhaust
Haltech

After the 91 octane runs, it was time to step up the octane and run the car on 109 octane and it did 749 awhp at 1.6 bar of boost.

Then the fuel was switched out again, to my favorite big turbo, big boost fuel – C16. 117 octane leaded race gas and the car laid down 775 awhp. This is now one of the most powerful, if not “the” most powerful R35 GT-R in the world

[Source: SP Engineering]