DMH Cutouts Install
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2004-2007 Cadillac CTS-V General Discussion Discussion, DMH Cutouts Install in Cadillac CTS-V Series Forum - 2004 - 2007; I'll be purchasing a set of the DMH Cutouts shortly and am wondering how difficult they would be to install ...
  1. #1
    Natedog's Avatar
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    DMH Cutouts Install

    I'll be purchasing a set of the DMH Cutouts shortly and am wondering how difficult they would be to install myself. Does anyone have any experience with these? It appears i just need to remove a section of the exhaust and put these in place with a little JB Weld and run the wire to the interior... is it this easy or is there more involved??

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    Re: DMH Cutouts Install

    I dont mean to sound like a dick, but JB Weld? Are you serious?!?! They need to be welded in with a mig or some other type of welder that actually melts and fuses metal together. Not something you squeeze out of a tube. If you dont have a saws all or pneumatic cut off wheel and at least a mig welder, take it to a muffler shop and have them welded in the right way.

    Also, not trying to be a jerk again, but you may want to have the wiring done professionally too.

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    Dave-V's Avatar
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    Re: DMH Cutouts Install

    I agree. I had a set of DMH on my first V and lived them. The muffler shop charges me $200 for the install including some cool down piped they custon fabbed. My car stero place wired and mounted the switch for $45. Spend the money and have it done right. My silver '04 is on the DMH website if you wnat to look at the downpipes. I had NO resonance anywhere.

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    Re: DMH Cutouts Install

    Quote Originally Posted by Dave-V View Post
    I agree. I had a set of DMH on my first V and lived them. The muffler shop charges me $200 for the install including some cool down piped they custon fabbed. My car stero place wired and mounted the switch for $45. Spend the money and have it done right. My silver '04 is on the DMH website if you wnat to look at the downpipes. I had NO resonance anywhere.
    Appreciate the input. I can't pinpoint which photos are of your V on their website... if you get a minute, can you post the link to the photos you're talking about... thanks

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    Dave-V's Avatar
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    Re: DMH Cutouts Install

    My car is in the photo gallery on the top row just to the left of the blue C5. It just has shots of the bottom of the car. All of the pipe was painted black. It is also the 2 shots on the bottom row.

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    Re: DMH Cutouts Install

    Sorry, I meant to the right of the blue C5.

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    Re: DMH Cutouts Install

    Thanks for the clarification, Dave. Do you have any issues with your fuel lines seeing as though the passenger side exhaust cutout is so close to them?? I'd imagine you should cover them to prevent the lines from melting....

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    Re: DMH Cutouts Install

    Any news on your install?

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    Re: DMH Cutouts Install

    Quote Originally Posted by Chef View Post
    Any news on your install?
    I spoke with Dave at DMH and he recommends their new low profile cutouts for the V. I ordered a set for 360 (free shipping) and will be getting in touch with Damian over the next few days to do the install for me. Supposedly these are a lot easier to weld in and do not hang below the stock exhaust which will alleviate the worries from those that are lowered.... comes with all piping necessary to do the install. see pics below.. first 2 are on a c5, last one on an 06 GTO



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    Re: DMH Cutouts Install

    do these things seal up well?

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    Re: DMH Cutouts Install

    Quote Originally Posted by ZEUSROTTY View Post
    do these things seal up well?
    I can't speak from experience seeing as though i haven't installed them yet, but they are supposed to be excellent, way better than QTP's etc and solid warranty... the butterfly valve is 3.5" wide and they can mate up to any size pipe... our stock exhaust piping is 2.5"

  13. #12
    urbanski is offline Cadillac Owners 10000+ Posts
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    Re: DMH Cutouts Install

    i'd worry about
    1. cooking the trans
    2. cooking the floorboard. warping the unibody =

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    Re: DMH Cutouts Install

    hmmm.

    Any pics of cuts right after the headers? or experience with them located there?

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    Re: DMH Cutouts Install

    Quote Originally Posted by Chef View Post
    hmmm.

    Any pics of cuts right after the headers? or experience with them located there?
    This is another forum members install with the old DMH cutouts... this is after the cats but before the resonator... i havn't seen any that are directly after the headers... with this setup i'd be worried about melting the lines on the drivers side... this is most likely very close to where i'll be installing the low profile cutouts

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    Re: DMH Cutouts Install

    Yep - I'm familiar with those lines as I just torched them with my headers and re-routed them...


    thx Nate

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