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Everything posted by spudulike
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<p>Hi Andy, Yes, looks pretty fast, Burrell tested his ported 357XP against MattyFs 560 and I have managed to get the 357XP as fast as the 560, My own one has had a pop up piston and a few other trick things done so reckon it will now out run a standard 560 comfortably.</p>
<p> </p>
<p>I do find the auto tune on these saws works well, I believe that the carb and ignition timing is being sampled all the time so as soon as the saw starts to bog, it retards the ignition and leans it so it pulls the revs back and then slaps the fuel back up and goes back to full advance - something you can't do on a standard 357 or other normal tune saws - it works really well and looks like the saw responds well to porting allbeit some pretty involved work as pop ups are not that easy to do...Burrell turned mine up with me overseeing.</p>
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<p>Should be able to do your 390 before long....I hope!</p>
<p> </p>
<p>Cheers</p>
<p> </p>
<p>Steve</p>