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Old 05-14-2018, 03:57 PM
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If your mufflers are stock from the factory they should like this on the inside


Stock will have this plate welded in


This is after I drilled out the plate and gutted the mufflers
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Old 05-14-2018, 03:58 PM
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Had the same boat, same year 525s with ITS
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Old 05-14-2018, 03:58 PM
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Thank you both for the info, i am going to take a look and post pics later tonight.
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Old 05-14-2018, 04:02 PM
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Originally Posted by VoodooRob


Had the same boat, same year 525s with ITS
That's a cool shot.
Newb question: what's ITS?
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Old 05-14-2018, 05:31 PM
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Originally Posted by jred2255
I do have the extension boxes. I think at the very least i will do turn downs. I just got off the phone with CMI, the recommend XTS tips as well, any one have experience with these?

Those XTS mufflers are nice a friend of mine was the test boat for them. He got a few tickets for just being over 86 decibels. He replaced those exact Corsa mufflers that you have. He hasn’t had an issue yet since we put the XTS’s on. They are still loud but quiet enough to pass the tests. He has 500EFI’s on a 38 foot Powerquest.
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Old 05-14-2018, 07:37 PM
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Originally Posted by jred2255
That's a cool shot.
Newb question: what's ITS?
Integrated Transom System | Mercury Racing

Nice looking boat, great colors.

RR





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Old 05-14-2018, 08:21 PM
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Originally Posted by Questofpower



Those XTS mufflers are nice a friend of mine was the test boat for them. He got a few tickets for just being over 86 decibels. He replaced those exact Corsa mufflers that you have. He hasn’t had an issue yet since we put the XTS’s on. They are still loud but quiet enough to pass the tests. He has 500EFI’s on a 38 foot Powerquest.
I'm glad you said that, i don't want to start just throwing stuff at the wall if it isn't going to work, i am getting a quote on the XTS mufflers now. Thanks for the info!
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Old 05-14-2018, 08:22 PM
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Looks like my mufflers are stock.....

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Old 05-14-2018, 08:49 PM
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Yes they are stock as quiet as they get.
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Old 05-14-2018, 09:06 PM
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Originally Posted by VoodooRob
Yes they are stock as quiet as they get.
Think the XTS mufflers would make it even quieter?
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