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MY impressions from the muffler delete on a 2015 R/T

6.4K views 6 replies 4 participants last post by  Kern Dog  
#1 ·
These base level 5.7 R/Ts are just too dang quiet.
The wife drives the car most of the time. 5.7L, A8 with Super Track Pack. The car is well insulated like all new cars, so these cars make almost no engine noise unless you are really ON the throttle. I know that with each side supporting a catalytic converter, a muffler and a resonator, it was quite understandable that it would be quiet.
THANKS to the many threads here and youtube links to guide me to the decision to remove the mufflers, NOT the resonators. The theme I kept reading here and elsewhere was that on automatic cars, the MDS creates strange sounding exhaust pulses at part throttle and the more free flowing the exhaust, the more noticeable the odd noise was. The manual trans cars are free to delete either the mufflers or the resonators without encountering the strange exhaust noise, since they do not have the MDS feature.
 
#3 ·
I had the muffler guy remove the mufflers and replace them with 2 1/4" pipe. The exhaust pipe forward of the mufflers is stainless steel. The mufflers and the rest of the exhaust is aluminized steel.
Total cost $122.
At first fire, the car has a cackle that settles down as the car returns to an idle. When revving in neutral or Park, the engine can now be heard but it is no way loud or annoying. At cruise, the interior noise is only slightly higher. Under throttle, the exhaust note is more throaty, a bit more aggressive but again, NOT loud or obnoxious. There is no way in Hades that it would generate the attention of a Police Officer looking to cite anyone for loud exhaust complaints. It actually is what the car should have sounded like as built. I'd prefer a bit more noise but it is the wifes car and she likes the sound.
When I pulled in, I saw another 2015 R/T in the lot. "Paul" and his wife were looking to add Flowmaster 40 or 44s to the car. I wish I'd have taken his number. I'd have told him to save the money and just delete the mufflers. I can't imagine that a Flowmaster muffler is going to give an increase in sound over the open pipes that I went with.
The black car was similar to ours. 5.7, A8, Super Track Pack witrhout the Sunroof/Navigation/8.4 screen/Dog polisher....
 

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#4 ·
Yep, I deleted my mufflers 2 days after I bought my 15 R/T. For the cost, its the best mod for the money. If you look back, The 09 6 speed R/T did not have a muffler, only resonators, and they sounded like mine does now.
 
#5 ·
The mufflers on my 2010 6sp R/T are little units, like glass packs. I took the resonators off to bad you can't do that with the Auto cars.
 
#7 ·
I am really enjoying the sound of the car. Cold starts are the loudest. At cruise it sounds barely louder than before but under a load, it is more hollow. Strange as it may seem, it reminds me of a high tech European or Italian sports car sound. From outside it sounds great. I was tempted to go with a replacement aftermarket muffler but I'd expect it to be quieter that way. No thanks. This was a great change for fair $$$.