Ford Mustang Forum - View Single Post - Roush Phase II Upgrade
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post #1 of (permalink) Old 12-10-2012 Thread Starter
cedarman2's Avatar
Joined: Dec 2011
Location: enoch
Posts: 23
Roush Phase II Upgrade

Anyone upgrade their RS3 to the new 625 HP Phase II? I am wondering how big the difference is in regards to power. Once you upgrade you lose the Ford warrenty. It is not my DD, I put on about 5k a year. Any thoughts or experiences?

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