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Let me start out by giving many thanks to all that take the time and energy to contribute and help out all in need. Here's what I have: 78 SE- bought as a non-runner. Like many of us posting I've popped in HHB PMA, PAMCO ignition (temporarily set at the mid point as per Pete's instructions) with...

Are 1 3/4" pipes too big for a stock 650? Even with Omar's Exhaust Optimizer and port inserts? I'm looking at his claimed power gains and they are enticing.