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Thread: Electric Exhaust Cut-Outs

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    Default Electric Exhaust Cut-Outs

    Has anyone ever used 3" electric cut-out that didn't leak after installing?

    I tried the 3 1/2" Race Ready electric cut-out years ago and it started leaking after only a few times using it. I replaced it with a new one and it started leaking just as quickly.

    I think I am going to fab up cut-outs with my new exhaust, but I wasn't planning on going electric because of the leaking issue.

    Anyone?

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    Quote Originally Posted by 98Dak408 View Post
    Has anyone ever used 3" electric cut-out that didn't leak after installing?

    I tried the 3 1/2" Race Ready electric cut-out years ago and it started leaking after only a few times using it. I replaced it with a new one and it started leaking just as quickly.

    I think I am going to fab up cut-outs with my new exhaust, but I wasn't planning on going electric because of the leaking issue.

    Anyone?
    I wonder how well a vacuum actuator would work. Also maybe something as simple as a push pull cable?
    1999 R/T CC Flame Red (what's left of the paint)
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    Last year I was thinking about putting cutouts on my truck. I read all the reviews on Summit and Jegs for all the different brands, none of them had great longevity.

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    I haven't heard of a push/pull or electric style that doesn't eventually leak. Only ones that don't are the style with plates that have to manually remove and use a gasket.
    12.10@106@Famoso Raceway

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    I wonder how well a vacuum actuator would work. Also maybe something as simple as a push pull cable?
    The problem I had was the plate not sealing. I put a new electric motor on it and the problem was still there.

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    Only ones that don't are the style with plates that have to manually remove and use a gasket.
    That is probably the way I will go. I'm going to try and make it accessible without crawling under the vehicle.

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    I have been curious what Kendigit uses for cut-outs, they appear to install a fair number of them. They have to be using a quality piece
    Last edited by 9t9-5.2; 03-09-2022 at 02:21 PM.

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    What about an OEM piece? Like from a charger.

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    I have been curious what Kendigit uses for cut-outs, they appear to install a fair number of them. They have to be using a quality piece
    Any link to their cut outs?

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    What about an OEM piece? Like from a charger.
    Not familiar with them. Any link to them?

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    Quote Originally Posted by 98Dak408 View Post
    Any link to their cut outs?
    https://www.kindigitapparel.com/prod...xhaust-cutouts

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    Quote Originally Posted by 98Dak408 View Post
    Not familiar with them. Any link to them?
    https://www.chryslerfactoryplans.com...Exhaust&type=3

    Idk much about them or if they hold up but maybe be able to find in junkyard for cheap

    I think most higher sports cars have active exhaust now.

    Of course modification is needed, but thats a given and will be easy.

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    Quote Originally Posted by niebs View Post
    https://www.chryslerfactoryplans.com...Exhaust&type=3

    Idk much about them or if they hold up but maybe be able to find in junkyard for cheap

    I think most higher sports cars have active exhaust now.

    Of course modification is needed, but thats a given and will be easy.
    I second this notion niebs, I've been holding onto a set of mustang GT350 exhaust mufflers, that have the active exhaust baffles, got it all free from a buddy of mine's body shop. EDIT: Plans are to somehow get them fitted and plumbed to the truck. Not sure if they will have completely the same effect as a true cut-out system though, I think they are still muffled somewhat. My '15 scat pack also has the active baffles in each rear muffler, but there's no switch just actuates automatically from whatever the engine computer tells it to do.
    Last edited by JDreamR/T; 03-11-2022 at 01:16 AM.
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    https://www.chryslerfactoryplans.com...Exhaust&type=3

    Idk much about them or if they hold up but maybe be able to find in junkyard for cheap

    I think most higher sports cars have active exhaust now.

    Of course modification is needed, but thats a given and will be easy.
    I second this notion niebs, I've been holding onto a set of mustang GT350 exhaust mufflers, that have the active exhaust baffles, got it all free from a buddy of mine's body shop. EDIT: Plans are to somehow get them fitted and plumbed to the truck. Not sure if they will have completely the same effect as a true cut-out system though, I think they are still muffled somewhat. My '15 scat pack also has the active baffles in each rear muffler, but there's no switch just actuates automatically from whatever the engine computer tells it to do.
    At first glance the Dual Mode Exhaust seems like more of a noise maker than making the system freer flowing. Their version of the cut out is at the rear of the vehicle, so even when you open it up, you are still forcing the exhaust through the majority of the plumbing. I want mine to dump shortly after the header collector, so it bypasses the rest of the exhaust system. Or if their cut out allows the full exit of exhaust gases, maybe it can be mounted further upstream. I'll have to look into it more and see exactly how their cut-out mechanism works.

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    Been trying to find a good pick of the Challenger cut-out without much success yet. It seems to be a butterfly valve inside the exhaust pipe. If that is the case, I doubt it would seal enough for it to dump right after the collectors. Since it dumps toward the rear of the exhaust, some leakage may not be as noticeable.

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    One thing about the oem cut-out is the spring. I bet the motor overshoots the closed position enough to place tension on the spring, which should help keep the butterfly plate closed, I would think, for a better seal. The aftermarket tends to make theirs direct drive, so maybe the motor can’t go any farther to keep tension on the plate, when things start to loosen up a bit. ???

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    Quote Originally Posted by 98Dak408 View Post
    One thing about the oem cut-out is the spring. I bet the motor overshoots the closed position enough to place tension on the spring, which should help keep the butterfly plate closed, I would think, for a better seal. The aftermarket tends to make theirs direct drive, so maybe the motor can’t go any farther to keep tension on the plate, when things start to loosen up a bit. ???
    Richard, you make a lot of good points, and I agree that like I said prior it's not really a true "cut-out" system. It appears to me that the baffle side is a straight thru design however, so there's that benefit at least. I meant to grab a few photos of what I got laying about today for you. But I will try to look into it tomorrow for you and will investigate further on the operation of the actuators as well.
    1999 R/T CC Flame Red (what's left of the paint)
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    Richard, you make a lot of good points, and I agree that like I said prior it's not really a true "cut-out" system. It appears to me that the baffle side is a straight thru design however, so there's that benefit at least. I meant to grab a few photos of what I got laying about today for you. But I will try to look into it tomorrow for you and will investigate further on the operation of the actuators as well.
    Thanks!

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    I had no idea there were so many “active exhaust systems” from many car manufacturers out there. Maybe if I can acquire just the motor portion with the spring, I could retrofit it to an aftermarket manufacturers cut-out.

    Some pics. There is apparently a hole in the center of the flapper valve:
    https://www.lxforums.com/threads/act...delete.387688/

    You can see the spring in this link:
    https://www.hellcat.org/threads/mfer...talled.218117/

    A vid showing the electric motor and spring:
    https://www.bing.com/images/search?v...ImgRaw%26r%3D0

    Magnaflow has a 3” active exhaust with their own version of the flapper valve. However, they apparently don’t sell it separately, and I can’t find any close-up pics of it. I wonder if it has a hole in the center of the flapper valve too?

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    The last time I looked at exhaust cut-outs was 2007. Apparently, there have been some refinements. For instance, the DPW 30306 uses a spring as well: https://www.summitracing.com/parts/dgp-30306

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    Richard, sorry its already been a week but here are some photos of the mustang mufflers I got. I tried to get the actuator to...actuate, but alas nothing happened when I applied 12V to it. I am unsure if they even sell any replacement parts for just the actuator motor who knows will take a bit of research. At any rate these are unlike the Dodge active exhausts that have a hole in the center, I believe these mufflers are straight thru when open and when closed it diverts to the secondary offset outlet. Anxious to hear how they sound if I ever get them hooked up.



    Ignore the mess in the garage lol
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    What size pipes do they take?

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    2-3/4" inlet, 2-1/2" outlets
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    So did a little more digging, and found a part number on the actuator. Part number is E300646932 and is made from German company Kuster, seems the same exact actuator is used on many OEM's from Lamborghini's, Mercedes, to Hyundai's and ...Fords. The Ford equivalent part is FR3V-9V468-AB.

    Link to Kuster's Exhaust Actuator page:
    https://www.kuester.net/en/products/...xhaust-systems



    And here's a video of the Audi/VW equivalent:
    https://www.youtube.com/watch?v=nOp8vng52PY
    Last edited by JDreamR/T; 03-23-2022 at 08:31 PM. Reason: youtube link
    1999 R/T CC Flame Red (what's left of the paint)
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    I found this link on active exhaust rattling: https://www.mustang6g.com/forums/thr...ttling.127063/

    I have a buddy that works at Ford in prototype development IIRC. I should give him a call and ask him if he knows anything about them.



    Edit: I contacted my buddy, but he doesn't know much about them. He said there have been problems with them pissing off the neighbors. He said at Ford he would start up a test vehicle in the parking lot, and people would jump at the abrupt loudness.

    This morning around 4am, there was some idiot racing around with the exhaust open, waking everyone up along the way. "Hey Dipstick!"
    Last edited by 98Dak408; 03-24-2022 at 03:12 PM.

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