Williams Rx7 in this week for retune and sorting the last things on his to do li…

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Williams Rx7 in this week for retune and sorting the last things on his to do list. This setup is running the new Efr 9180 turbo. They offer great response and power. Finishing up with a healthy 500hp on 24psi using the internal wastegate and pump fuel with water/meth inj

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