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cannga said:
Interesting thread. Question for the experts: The stock Turbo doesn't "take off" until 3000 rpm. Yet, the torque curve as supplied by Porsche shows peak torque much earlier, around 2200. Why are these 2 numbers not correlating? Another example of marketing hype?


With Turbo motors, you can make a much more impressive curve than anyone would realize under real-world driving conditions by adjusting the load on the motor. That has certainly been the case with all modern turbo cars. Do you really think a BMW 3.0TT makes 100% of its torque by 1,300rpm in the real world? Hell no...

The only way to try to simulate those torque curves in the real world would be to drive the car with 4 passengers up a steep hill at slow speed in 6th gear. Now who would drive like that?

The car actually drives much better in 1st gear in that circumstance, but it doesn't stress the motor enough to build enough exhaust pressure to spin the turbines to make full boost at such a low rpm. In 1st gear, the motor doesn't stay at such a low rpm long enough for that.

To make a pretty torque curve, you have to badly handicap acceleration performance (the exact opposite thing the pretty torque curve would imply).

Yes, it's marketing hype on the part of Porsche and everyone else with a turbo motor for sale today...