Thread: Performer vs RPM?
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12-24-2013 04:38 AM #1
Performer vs RPM?
What's the real difference between a Performer and a Performer RPM on a street driven 390 Mercury? I got a free Performer and read nothing good about them. Are they better than a stock 4bbl intake, or just lighter?





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I'm happy to see it back up, sure hope it lasts.
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