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How to add 50 RWHP to your Roush 427R!

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.