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Old 07-11-2009, 08:47 PM
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I've been told 8-12hp of the hp increases with performance exhaust is the result of the turbulators being removed.
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Old 07-11-2009, 10:44 PM
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Originally Posted by GO4BROKE
I've been told 8-12hp of the hp increases with performance exhaust is the result of the turbulators being removed.
Yep. See the "496 Mag Dyno Testing & Myth Busting" section in:http://www.fullthrottlemarine.com/
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Old 11-01-2009, 11:37 AM
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Hi, I have a donzi 35zr with 2 496 with Corsa Q & Q, do you have an exhaust kit for me that replace the original exhaust?
I need 2 kit so, could you make a special price?
Thanks
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Old 11-02-2009, 10:56 AM
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Here are before and after prop shaft dyno sheets for CMI sport tubes on a stock 496 HO.
Attached Thumbnails 496 CMI header myth?-stock-496-ho-b.jpg   496 CMI header myth?-496cmi.jpg  
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Old 02-22-2010, 06:55 PM
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Originally Posted by bobl
Here are before and after prop shaft dyno sheets for CMI sport tubes on a stock 496 HO.
Anybody have the dyno results for the E-top headers?
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Old 02-23-2010, 09:21 AM
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Originally Posted by Back4More
Once and for all, are the CMI E-tops or the Sport tubes netting any real speed gains?
My 2 cents: 27 Fever, 66mph on Fountain performance report with stock engine and 24" prop.
When I bought her, the previous owner had her fitted with sport tubes and a labbed 26" prop.
Now good for 70mph, but I can't say how much is courtesy of the prop or the exhaust.
My guess is that neither - alone - could have given a 4mph improvement. So half and half, maybe?
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Old 03-18-2010, 11:56 AM
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anyone have before and after sound clips of CMI E-tops?
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Old 03-21-2010, 07:11 PM
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I would like to see a pic of the E-tops on the 496's if anyone knows where one is.
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