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Message: <blockquote data-quote="Bullitt5339" data-source="post: 817595" data-attributes="member: 13030">Before it blows a piston to pieces?Apparently around 538rwtq....... :laughing5:Was on the dyno today and shattered a piston on my stock engine on a 125 shot. I'll try to post some pics when it's torn down, but basically the A/F was perfect, and it made 357rwhp and 476rwtq. He fattened up the bottom end, right when the window switch kicks on, and the nitrous loved it. Loved it a little too much, it seems. With the same jets, same timing, just fatter on fuel, when it popped at 3800ish rpm, it was making 360rwhp/538rwtq.Oops....... Time for a new engine.</blockquote>