Replace all 4 mufflers with Vibrant 1794 or just the mid mufflers on 21 CHARGER HC?
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I personally would leave the rear mufflers (resonators) alone. They keep the car from droning at highway speeds. If a mid muffler delete is to loud or you dont like the sound, then id say just do the mids.
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I had Dynomax bullets on my 392 and Blastin Bob’s rear delete. Sounded awesome but had a bad drone 2000-2500 rpm. It was M6 so it was easy to shift out of it. Just bought another pair of Dynomax for the HC but plan to keep rear resonators this time.
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I am new to the forum as i just got a 2016 HC. The guy before me left everything stock and in regards to the exhaust, the only thing he did was replace the mid mufflers w 1794s. I like the sound BUT would like Louder (nothing crazy). Should i remove the 1794s and go straight pipe OR put on 2 more 1794s at the back????? Sorry, i am not a mechanic, nor am i very knowledgeable - just trying to figure out how to make what i have now louder wo drone…
It's loud enough. Leave it alone.
Louder without drone... That costs money.
If you do a mid delete and straight pipe it, regardless what people here might say in disagreement, the drone is real. To get louder than 1794s with no drone, you'd need a part matched catback exhaust kit from Borla (ATAK mufflers) or something similar in an off-road certified exhaust. Gibson, AWE, and Stainless works are a few I've dealt with and they all offer off-road track certified mufflers with no drone. Mismatching midpipe mufflers and rear resonators generally causes drone. The Vibrants do not, but if you cut those resonators, there's a strong chance that you'll end up with drone. To be sure to eliminate it, you should find a part matched catback kit that comes with a no drone guarantee.
One of my previous cars had a badass sounding exhast. It got tons of compliments. Heartthrob midpipe resonator coupled with Magnaflow mufflers on a custom built 3" stainless exhaust. What they couldn't hear though, was the tooth rattling drone that started at 2,200rpm or so and persisted through to 3,100rpm. This was lovely because in 6th gear cruising on the interstate, the car ran around 2,400 RPM at 75mph. There was no "legal" speed I could do on the interstate under 90mph where I wasn't in drone. It was miserable and I cut those off after about 2 months. Flushed $1,400 down the toilet and paid another $2,500 for a StainlessWorks catback system. No more drone, sounded great. Lesson learned.
Also, to keep it loud, you'll have to modify the exhaust valves to stay open all the time. Right now, they're set to open under heavy throttle, which increases the sound, but they close to make the car quieter during normal driving. I personally wouldn't mess with it, but many people do. You can search Google or these forums for how to disable the exhaust valves without getting a CEL.
It's your car, do whatever you want. I just would like to remind you that this is a Hellcat, not a Mustang or Camaro that people generally ******* out to sound like dump trucks... which is what the Hellcat on straight pipes sounds like. Sure, it's loud... but sound quality wise, it sounds like a loud dump truck.
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If I was you I’d just do Active Exhaust Delete to keep exhaust valves open all the time. That should give you cold start sound levels. Most delete kits are less than $200 and are super easy to install. I’d keep the rear resonators. It will drone if you remove them.
That's how mine was originally. So if you want a bit more, remove the bullet muffs. It will add more raspiness. Secondly, have you had the converters replaced?
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I appreciate the advice, and no I have not replaced the converter. I guess if I want to try something inexpensive first, I should take of the 1794s (at the mufflers) and perhaps try straight pipe. I still have the resonators so I should have a louder exhaust still without the drone, correct?????
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I've only heard the S-Type on a GT500 but it sounded good. I would like to hear it on our cars to see if it is loud enough or if I would need to get the ATAK
Are you driving around in street, sport, or track? Track will make the Vibrants sound significantly louder, try that out before you go changing up the exhaust. If you like that sound, you can buy an active exhaust delete kit. The only problem with them is then you can't adjust things. I really wish Dodge would create a software update which would allow us to change the AEV independently instead of being tied only to the mode you're in.
Yep, NO DRONE with bullets, converters, and stock resonators.
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