I am confused though. I was messing about with custom mapping & EMS, making throttle bodies, building engines, cam profiles nearly 20years ago whilst I was hill climbing and sprinting in fwd mod prod's. I can't remember the exact values now, but I remember wanting acceleration (torque- and lots of it) at low rev's, couldn't give a rats doo-dah about power. The Quaife LSD and slicks converted that torque into traction, which, along with final drive ratio, produced quicker times. The one time I built an engine with it's focus to produce power rather than torque, I was much slower and the LSD struggled with the higher revs.
So Despite me retracting my earlier 'tosh', torque isn't irrelevant, or is it?
There is an awful lot of cobblers spouted on t'net by people about power and torque and such stuff, but the physics is very simple.
Power is simply torque multiplied by speed, in effect going from a "force" to an amount of "work done".
By making a higher torque at lower rpm in the example above, you also made more power at that lower speed!
The amount of torque an engine makes across a certain speed range is only important if one doesn't have a transmission system to leverage that torque across a wide enough road speed range.
Where we are talking about motorsport, or performance, then the simple fact of the matter is that developing an engine to make good torque at 3000rpm will result in a slower car than doing an engine which makes good torque at 6000rpm. In fact, simply put, if your engine is only doing 3000rpm, when it could be doing 6000rpm, you're in the WRONG gear!
F1 cars, efspecially, are always in the right gear. We don't spend hundreds of millions of pounds a year to give the cars around the wrong gear!
Of course, the old wives tale "power sells cars but torque wins races" is bolleux! Only if you don't have the correct gearing would an engine with a wider torque spread be faster than one with higher power. And if you haven't got the right gearing, why are you wasting money on making more torque?