Ever since Nissan unleashed the GTR on the world, tuners have been trying to push the limits on the all wheel drive beast. While there have been a few minor improvements, no huge leaps have been made until just recently when an American company released a turbo upgrade promising some huge power figures.
South Side Performance based in Sioux Falls, South Dakota has released a brand new upgrade kit for the R35 GTR that, according to their testing, makes 820 horsepower at the crankshaft. The good news is that it requires only a single line to be replaced on the entire vehicle.
The kit is based around a more efficient kind of turbo, manufactured by Garrett, that produces more boost at lower RPM's by spooling up faster. The result is being able to run a lower boost pressure while also making more power.
The cost of the kit is $6,499, which includes all the necessary machine work and installation. The cost does however require a trade in of the old turbo setup. The system takes about a week to completely install and is safe up to 32PSI.