2LikesThread: Performer vs RPM?
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12-24-2013 03:38 AM #1
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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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This popped up on Facebook, one of those "Do you mean for the last 40 years..." moments. A drop dead easy and accurate way to check Toe In! -
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