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Because that's where the supercharger kicks in, boosting hp, and the spoiler kicks in just before, lowering torque, and at those speeds air gets really cold so it doesn't matter if you have a cold air intake or not and it all just evens out until the turbos kick in making power go vroom vroom and torque go phfss but the car can still go because racecar.
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Loved the response.
My Nissan QR25DE makes more torques than horsepower. The reason for the cross at 5250 is that horsepower is calculated using the torque measurement.
Ding ding. We got a winner.
HP is imaginary thing. TQ is the only measurable out from an engine. This is then used to calculate a HP figure.
IIRC (TQ*rpm)/5252 = HP
The higher in the RPM range your peak TQ is the higher the HP.
Like when you add cam(s) with more duration. This moves your TQ up. In turn raising your HP.
In racing where a car lives in the high RPM's TQ isn't nearly as relevant.
In a street car where you spend most of your time in the lower RPM's. TQ becomes very relevant in the fun factor.
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