Help with off-idle stumble

carbondaddy

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Ive' got a Vector turbo powered sled that runs rough just above idle. It starts and idles fine and above about 5000 rpm is fine but between that it like drops a cylinder. It always happens in the same rpm range and you just give it a little throttle and that cylinder comes to life and it smooths right out. No codes. It started shortly after I blew an intake boot on the clutch side cylinder, which I've replaced. Any ideas?
Craig
 
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