What is resonator delete?

If done right it pretty easy to put it back on if you regret taking it off. I had my guys cut the resonators off and weld on straight pipes. Last about 5 minutes before I told them to put it back the way it was.

The sound wasn't what I was looking for. It's a preference thing. You may like it. Slightly louder and raspy.
 
TWO QUESTIONS:

- What is it?

- Why should I do it to my FX? (2009 FX35)

1) There is a straight pipe to the rear section muffler. On the straight pipe, there is a resonator that helps eliminate certain frequencies of sound. You will notice it as it's a larger diameter section of the mid pipe.

2) Better flow, a resonator has to create some turbulence to eliminate unwanted frequencies of sound. That's why you see "high" flow resonators that will do a decent job but keep the flow loss at a minimum.

V6 engines are not harmonically balanced, correct me if I'm wrong. V8's are as they are practically two I4's joined. That being said, V6's create more drone due to this and V8's don't. Eliminating the resonator on a V8 makes sense. Eliminating it on a V6, makes no sense unless you don't care about the headache you might get while cruising at certain speeds.
 
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