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How to add 50 RWHP to your Roush 427R!

by Serene Gaspar August 26, 2009

Adding Horsepower to your 427R is easy! Simply visit Steeda.ca and add 50 rwhp and 70 rwtq!

Ingredients:

Steeda Cold Air Intake
Smaller Supercharger Pulley
Oversized Crank Pulley
Steeda.ca Custom Dyno Tune

Before & After:

The graph below illustrates the improvement in smoothness and progression of the power curve as well as the significant gains associated with the above modifications coupled with a Dyno Tune.