[UltimateChallenger]

I want to delete my mufflers but was told that would reduce low end torque and possible some horsepower. Is this true or myth? Is there a definitive answer?

 

[blackout91]

It is true... you'll Def lose low end torque but what you lose on one end, you gain on the other, i.e. horsepower. You lose that back pressure that the mufflers give you, but with the free flowing air from not having mufflers, the quicker the air exits the more hp you gain.

 

[wasp392]

It's a myth. As long as your piping is the proper size.


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[AwesomeBobX64]

I did the resonator delete, moved my peak torque up to 3500 RPM from about 2500 RPM, but it's not really that bad.

Then I added electric cut-outs, right behind the catalytic converters and a bit before the mufflers.
With them open, it's the best sound I've ever heard in my life, but I have WAY less torque until about 3500 RPM when it comes back. It also sounds like my car is yelling at the world for being in its way.

With them closed the torque is back to what it was and the power delivery not only flattens out but is significantly smoother.

I can do back to back A/B tests, bottom line, you lose torque without mufflers.

I would highly recommend the resonator delete though for manuals. I loved it until I got my cut-outs five months later.

If your exhaust is comparable to a 2013 and you're near me I'd love to swap from behind the mids to the rear bumper so that it's stock with the cut-outs closed (cut-outs are installed on the mid-pipe).

 

[viper-power]

I did the resonator delete, moved my peak torque up to 3500 RPM from about 2500 RPM, but it's not really that bad.

Then I added electric cut-outs, right behind the catalytic converters and a bit before the mufflers.
With them open, it's the best sound I've ever heard in my life, but I have WAY less torque until about 3500 RPM when it comes back. It also sounds like my car is yelling at the world for being in its way.

With them closed the torque is back to what it was and the power delivery not only flattens out but is significantly smoother.

I can do back to back A/B tests, bottom line, you lose torque without mufflers.

I would highly recommend the resonator delete though for manuals. I loved it until I got my cut-outs five months later.

If your exhaust is comparable to a 2013 and you're near me I'd love to swap from behind the mids to the rear bumper so that it's stock with the cut-outs closed (cut-outs are installed on the mid-pipe).

Hey,
Will you loose torque/hp on the resonator delete, i have owned 2 challenger wich i bought them already with the resonators delete and they sounded so good...i was planning on doing this to my manual rt or get a corsa extreme but will see

 

[AwesomeBobX64]

You do loose a bit. It's not VERY significant, but you'll notice it for the first week or two if yours is a daily driver. Then you just stomp the pedal and wait for 3-3.5K RPM for the torque.

If you can swing a cat-back system (the price doesn't bother you), go for it. The resonator delete, for me, was a great sound, and cheap.

 

[UltimateChallenger]

Thanks for all the quick and knowledgeable responses. I think I will just stick with stock exhaust for now since the lower RPM range is where I find the car spends most of its time. I would hate to lose even the smallest of amount of torque. To me, the torque is what makes these cars so fun.

 

[MuscleCarProf]

It's not gone, if it goes anywhere it's just higher up the rpm curve.

 

[Djackpower]

Thanks for all the quick and knowledgeable responses. I think I will just stick with stock exhaust for now since the lower RPM range is where I find the car spends most of its time. I would hate to lose even the smallest of amount of torque. To me, the torque is what makes these cars so fun.

I have a 13 auto. I did muffler delete. Thought it sounded a little cleaner and less raspy the resonator delete. I did notice a low end torque drop significantly. Since I wanted louder I put on super 44 flowmasters and did resonator delete. It rumbles now and sounds great. If you don't like drone it will not work for you. The super 40's may be more tolerable. You could also add super 10's at the tip to counter some of that. Either way it will sound like it should!