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Now with S power!
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23,915 Posts
Discussion Starter #1
What can i do to mod my car without invalidating my warranty to give a few more horses thats not too expensive. any advice anyone??
 

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Sullivan Racing
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1,117 Posts
My advice on a Cooper is a cat back exhaust and an intake. Should give you about 10 HP between the two, better engine sound and exhaust note, should not void the warranty, and should be had for less than $800.
 
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