[Ludwig]

I just purchased my 2014 Jeep Grand Cherokee EcoDiesel and i wanted to get more sound and maybe better performance out of it by removing the two resonators by the back bumper. So, after doing so i hardly noticed any sound difference also haven't noticed any positive performance so far. I have noticed a slight lower mpg though. Ive only had the resonators off for a day and i'm thinking about putting them back on. Whats your guys thoughts? Below are a couple photos. The muffler shop recommended removing it to remove restriction and improve flow.

 

[SPOOLED_07]

I imagine the majority of the restriction is in the DPF. There's no way the resonators are as restrictive so probably won't see much of a gain removing them. They probably help with just the drone.

 

[Ludwig]

Yeah, all the restriction is at the DPF. I haven't noticed any drone at all after removing the resonators.

 

[M5040]

The turbocharger takes away a lot of exhaust noise, some big trucks don't even use mufflers

 

[onebluemcm]

OP - one day is not really long enough to judge any change in MPG, in my opinion. How much of the decrease in MPG do you think could be you trying to see if it sounds any different by getting on the accelerator more than normal? Just wondering - if it was me, I might get on it a bit more after this change to see if I could tell a difference, just saying....

As M5040 said, the turbo really quiets things down and combined with the DPF, I doubt any changes will have any effect on performance or sound unless the DPF is gotten rid of, and that is not really an option if you value your warranty.

The change looks good though, and surely you dropped a few pounds off of it.

 

[Ludwig]

@onebluemcm Well stated. After a few days of driving i havent noticed much change in mpg. As for performance not much either maybe a lil better response.

 

[Ecod4Tt]

I did this same resonator delete, you may hear a slight more aggressive tone if you really smash the gas, and they only weigh about 16lbs each, so there isn’t any gains at all, and the MPG’s don’t change at all, I thought the same but realized I was driving harder to hear/feel a difference

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