[colt513]

Originally Posted by arakis

335i is a N/A engine, 335d is turbo charged Diesel, if you stic a turbo on that 335i you would get aleast a 30% increase in power and torque,

I know what power is and what torque is, torque by itself is mening less, more torque doesent mean a car will accelerate fasster its more complicated then that, as you put it elimentary physics,

example car 1 diesel 700nm at 2500rpm, and 5000 redline,
car2 gass 500nm at 4250rpm 8500 redline

***numbers quoted above are max torque, for the sake of this exmple it is asumed both cars have te same curve(proportionaly adjused for their revanges)

car 2 will accelrate faster then car1 in every example, because compared to the car 1s gearing car 2 has 850 NM,

so higher NM is only directly comparable if the cars havve the same gearing, and higher reving cars have a better gear ratio, simple bycicle physisce

Actually, the 335i is a single turbo (for 2010) and twin turbo for earlier iterations. However these figures are all bad comparisons to race cars because these road cars are limited electronically. Their boost pressure is kept down and can be turned up via ECU reflash. For example the BMW 335si makes 30 more horsepower than a regular 335i becuase of different engine mapping.