It’s not every day that you get to test the veracity of a dubious automotive claim made by an entire nation of car companies for more than a decade. For me, that day was last Tuesday. Yes, ladies and gentlemen, that’s right: I took my Nissan Skyline GT-R to a dyno to measure how much horsepower it makes. We had a little horsepower guessing game going. It was a nice time, over on Twitter. This angry Nissan Skyline R33 GT-R with HKS T51R turbo, 2.8-liter stroked and RB26 powered on the dyno. Previously the car made over 650KW to all four-wheels in RWD mode. This time the Nissan Skyline was struggling to put it’s enormous power down to the rollers . Back in 1989, when my Nissan Skyline first came out, all the Japanese automakers had entered into a “gentleman’s agreement” to limit horsepower to less than 300 . Anthony’s Nissan Skyline GT-T has recently been converted to E85 fuel. The car is powered by the factory 2.5L NEO RB25 6-cylinder. Boost comes from an upgraded Garrett GTX3582R turbocharger and MicroTech EFI system. Anthony has previously run 12.2 at 124mph with a smaller turbo on pump unleaded petrol .