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Saturday, January 14, 2012

Limited Slip Differential (LSD)

There's pros and cons in eveything such as when it comes to increasing performance, 2 steps forward often come at the cost of 1 step back. Decreasing body roll & lowering ride height can come at the cost of a harsh ride; Increasing power can decrease Fuel economy & increase the Fuel Consumption (FC) or driveline longevity, raise engine temps, impact emissions.

Besides that, changer to a higher-friction brake pads likely means you will have to replace them more often though it will increased traction. By adding a limited slip differential (LSD)-a modification long-embraced by tuners for having little to no apparent drawbacks actually decrease power output (Po) & make you slower.

Will Adding A Limited Slip Differential (LSD) Decrease Power?
It is a proven fact that adding rotational mass to a car's driveline-engine & transmission internals, pulleys, flywheels, wheels, axles, etc.-will decrease power output and slow acceleration; proof of this can be seen in the difference between an engine's power numbers taken at the wheels as opposed to the flywheel. Logic would assume that spinning two wheels with a locked or limited slip differential would require more power than spinning one with an open differential (like most cars are equipped with), but is this what's really happening? The answer may be clear to those knowledgeable in transmission anatomy, but regardless, it remains a common debating point worthy of our ink.

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