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Purely from the sound defiantly sounds like ignition.

Hesitation and misfire yes. I think an important clue is that it died as I rolled to a stop in pit lane after it was smoking and seemed to suffer hydrolock on startup and started up perfectly next try. It died when I rolled off the throttle around 2-3k. Im guessing that can't be related to compression.
Could the injector be leaking or not closing completely and dumping way too much fuel?
 

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Discussion Starter #83
Could the injector be leaking or not closing completely and dumping way too much fuel?
Could cause smoking but not the hesitation, which happens with either injector disconnected. I also checked for air leaks around the injector o rings.
 
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