Flowmaster Muffler - GT

Discussion in 'Dodge Challenger GT AWD Forum' started by UNDERD0G, Oct 11, 2017.

  1. UNDERD0G

    UNDERD0G New Member

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    Hi everyone. So I've decided to purchase and install the Flomaster Super 10 Series Muffler on my GT. I'll delete the resonators and go straight pipes with stock tips. I know it's a v6, I know it's never going to sound like a v8... no need for lectures. I just want a more fun and enjoyable drive, instead of sounding like a church mouse going down i95.

    With that said... I'm not a mechanic and I don't know if I need two mufflers... or one. Or if there are any road blocks that I am not aware of for going this route with an exhaust mod. Would love someone to drop some exhaust knowledge on me and take me to school. What do I need to know? I can't pay for your time, but I can shower you with compliments in exchange for advice.

    Thanks - UNDERD0G
     
  2. Koop

    Koop New Member

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    Like you, I am tired of the "quiet as a church mouse" sound.
    I assume you have viewed and listened to as many YouTube clips as possible on the 3.6 exhaust upgrades.
    I have my mufflers ordered, Magnaflow 10416. I hope to have them on this weekend. I plan on replacing the mid mufflers and leaving the back resonators on. There is a very well made clip of this setup and i think this is what I need.
    If not loud enough I can always delete the resonators later.

    You will need 2 of what ever muffler you choose and a good shop to perform a nice install.

    Good Luck and enjoy your nice ride!
     
  3. UNDERD0G

    UNDERD0G New Member

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    Thanks Koop, you are a gentleman and scholar. Hope you end up getting the sound you’re looking for too. I’ll be purchasing two Flowmaster Super 10 Series mufflers, as you suggested. Kudos!
     
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  4. Hank

    Hank New Member

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    When I had my 09 Challenger RT I went with the Flowmaster American Thunder System on the car and really liked it. I just went on Flowmasters website now and they make a kit especially for the 2017 Challenger 3.6 GT. They have a sound video of it too. I wouldn't waste the money, V-6's just don't cut it.
     
  5. twomedic

    twomedic New Member Public Safety

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    Just went with this set up myself about a month ago. I have to admit I was disappointed because it was hardly louder than stock. However after about 400 or so miles, the mufflers have gotten a little louder and closer to what I'm looking for. These mufflers and the Airaid CAI combination don't sound too bad....at least to me.
     
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  6. Koop

    Koop New Member

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    Well I wish I could tell you how mine sounded. My exhaust guy couldn't do the install yesterday so the plan is this week some time. Really not looking for loud just some tone.
     
  7. BeastieOwner

    BeastieOwner Member

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    When I had my V6 I really loved the OE Q car whoosh” Now, my SRT will roar and rumble, but then it’s a totally different car..
     
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  8. Koop

    Koop New Member

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    Well tonight after 1 guy backed out on the install, another said the 10416s would not fit, I found guy #3 who talked me into trying a strait pipe in place of the mid mufflers before installing the Magnaflows. He said that they were so close to the stock mufflers that there couldn't be much difference.
    I hate the sound now with strait pipe in place of the mufflers. Too high pitched raspy.
    I think tomorrow the oems are going back on and the Magnaflows are going back to Amazon.
     
  9. twomedic

    twomedic New Member Public Safety

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    My guess is you were told they wouldn't fit because the 10416 is 2.5 in/out. The 10415 is 2.25 in/out which is the same diameter as our exhaust. As mentioned, they do sound better over time once they burn in a little. Mine are now sounding very similar to the You Tube video. Good Luck with whatever you decide!
     
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  10. Koop

    Koop New Member

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    Do you notice any drone now that yours are worn in? School me if you can, what would make them sound different being that they are very similar to oem? I'm asking so that I can justify the cost.
     
  11. twomedic

    twomedic New Member Public Safety

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    There's no drone at all. Just a deeper and a little louder exhaust note mainly while accelerating. Under hard acceleration they sound even better once broken in. Hardly any difference from OEM while idling or cruising on the highway. I'm not sure what the internal differences are between them and OEM even though they are the same shape and size.
     
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  12. Koop

    Koop New Member

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    Can you hear them on hard acceleration inside the car?
     
  13. twomedic

    twomedic New Member Public Safety

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    Yes you can but by no means too loud.
     
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  14. J T

    J T New Member

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    When they did your straight pipes did they do it after the factory “x pipe” or did they delete or add a new x?
     
  15. Koop

    Koop New Member

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    They did it after the x pipe. I didn't like it. Very high pitched. I had the OEM mid mufflers put back on. Going to leave it alone now and will revisit this in the spring.
     
  16. Granite Ghost

    Granite Ghost Member Public Safety

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    I can verify the NO drone with the 10416s. They're a good option to get a little more volume outside, no drone, and a little more volume inside the cabin. I think internally they don't have as much packing in them as the stock ones. I compared them to stock, looking through both, and structurally they're very similar. They are 2.5" instead of 2.25", but that's no problem. Your muffler guy just cuts a piece of pipe as a shim and welds it in, or like one guy I've seen, just slops a bunch of weld in to fill the gap. Either will work, but the shim pipe thing is cleaner. For me though, the 10416s were too quiet inside the cabin. I run in manual shift mode a lot, especially when on twisty roads, and like to hear where I am in the rpm range rather than having to watch the tach. I ended up swapping the 10416s for some larger ovals. Not sure if twomedic is referring to my video(s) or not, but here are links to a couple of vids I did. They include stock, the 10416s with resonators still attached, and then my final setup with ovals and resonators deleted. All the details are in the video descriptions. As always, "your mileage may vary". :)

    Exterior sound:

    Interior cabin sound:
     
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  17. Koop

    Koop New Member

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    Thanks. Yes, your video was what made me decide to try them. Unfortunately I had an exhaust guy who didn't want to listen to me. Another member ran into this same issue with her exhaust guy. After hating the straight pipe he recommended, I just went back to the oem and returned the 10416s. I wish I would have just insisted on him installing the magnaflows the first time.
     
  18. Granite Ghost

    Granite Ghost Member Public Safety

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    Sorry to hear about your "muffler guy" experience. Sadly, many of them have no clue about the V6 Challengers. Straight pipes on a V8 might work, but on ours seldom sounds good, and usually drones like mad. Some of them try to talk us into using smaller 14" ovals that they say they use a lot on Mustangs. But those are too small too if you're deleting the resonators. I tried them, and they were buzzy/ricey and sounded like I had two trombones stuck to my butt. When deleting the resonators, the bigger cans you can mount, the better. I got lucky with my guy. He's willing to try anything I'm willing to pay him for, and after his recommended 14" ovals didn't work, he even removed them and got the ones I wanted and mounted them for free. And I totally don't get how he couldn't figure out how to easily adapt the 10416s. It took my guy a couple minutes for each one. Cut a short piece of pipe, slip it in, and weld it. Simple. Regarding the other member, was that Marissa? I remember her getting quite the runaround from her muffler guy, wanting to do everything BUT what she was asking for. It's like some of these guys forget that you're the paying customer. :(
     
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  19. twomedic

    twomedic New Member Public Safety

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    Hey Granite Ghost, it was because of your videos that I decided to go with MF 10415 and keep the resonators. It got me really close to what I was looking for. Thanks for all your hard work and expense of putting that together! They are extremely helpful!
     
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  20. Granite Ghost

    Granite Ghost Member Public Safety

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    Outstanding! So glad you found them helpful. :)
     
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