Tighter springs, especially in the rear, will translate to more torque at the wheels because less torque is lost making the car squat. I notice a big difference when I have 20 PSI or more in my rear spring air bags. Of course, the ride is more harsh... but there is a notable difference when taking off from a stop.
The same goes for torque dampers on an engine. The less torque is wasted making the engine twist on its mounts, the more gets to the wheels.
|