Engine upgrade
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2nd Gear Member
Joined: Apr 2007
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Engine upgrade
I was wonder what i can do to my Mustang GT and not void the warrenty. If any one has any info on this also can you say what i need to get and how much Hp my car will gain from that upgrade . Tnz in advance
2nd Gear Member
Joined: Apr 2007
Posts: 413
From: IL
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