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post #1 of 4 (permalink) Old 02-11-2010, 07:26 PM Thread Starter
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whisper core with 840

what does everyone think of using whisper cores on an 840 and muzzypro?it seems like the exhaust is even louder after the 840 install or maybe its just me....sounds mean as hell nonetheless but was wondering about making it a TAD quiter....and maybe the turndowns as well.
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post #2 of 4 (permalink) Old 02-11-2010, 10:08 PM
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I'll be able to give some info on that in a week and a half or so. I've got the 840 with stage two carbs. Because I'm not going for top end anyways I figured I would try the whispers. Rmuzzy says the whisper will actually add a bit of mid range and only a couple lost on the top end.....but went on to say that with stock carbs there would be no loss of top end with the whispers because the carb is the restriction anyways. That all said....I'm gonna try my pro pipes with the quiet core and then the whispers because I have no idea what to expect. I'm not one of the quys who needs it loud so good power at a respectable noise level is my goal.
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post #3 of 4 (permalink) Old 02-11-2010, 10:22 PM Thread Starter
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thats what i want....a quite dragster!
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post #4 of 4 (permalink) Old 02-12-2010, 12:37 PM
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The PRO Whisper cores are a LOT larger and longer than the standard whisper cores. I would try them on either, they definitely do quiet the machine down a lot. My PRO system with whispers is a good bit quieter than my standard system with whispers, but I have not built the engine yet.

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