2019 BMW X5 M50d Chip Tuning Takes Quad-Turbo to 515 HP
23 Mar 2019, 19:15 UTC · By: Mihnea Radu / That's 129 horsepower per turbocharger or 172 horsepower per liter. Either way, it's amazing for a diesel, even if it's not the way BMW wanted it
2017 BMW 750d xDrive Launched with 400 HP Quad-Turbo 3-Liter Diesel
16 May 2016, 22:08 UTC · By: Mihnea Radu / The new quad-turbo is a direct replacement for the tri-turbo found in the old 750d, being 5% more powerful and 11% more economical
Racing Engine with Four Turbos and Four Rotors Makes for Epic Mazda RX-2
9 Dec 2015, 16:32 UTC · By: Mihnea Radu / Back in the day, this car came with a 1,146cc rotary engine producing slightly more than 100 horsepower. But now, it's a thousand horsepower methanol monster