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Whats your favourite Upgrade?

3615 Views 5 Replies 6 Participants Last post by  toneil
Hey everyone I have just recently got a 2015 Ford Mustang EcoBoost and I was wondering what are your favourite upgrades you have seen or you have installed on your own Mustang. I haven't done in depth research into performance parts so if you know of anything that can add even more power, post post post!!!!!!
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Also not a power adder, but hands down my favorite modification so far is my blow off valve. every time you take your foot off the gas, you get that iconic PSSSSSSSSST sound and it still never fails to put a smile on my face, and it turns heads. its loud and fun and seperates your car from a crowd while driving. its all about smiles per gallon.
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