Catalytic converter

[MidTNDawg]

What are the actual benefits of removing the C.C.? Throatier exhaust sound? More power? Any shift in the "power band"? MPG?

Thanks

[jneg2]

The need to not leave well enough alone!

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[Mike Ard]

What I found is if you install the cat bypass with the stock muffler it would be helpful to also install the big city thunder baffle. I was really surprised how much low and mid range power I gained.

with just the by pass pipe I found it to be just a bit louder than I cared for and since it was put on since new I was not aware of any power loss. The baffle takes the edge off the noise and gives the exhaust a nice deep note.

do you need to make the change?........No of course not........but I'm glad I did.

The cat weighs something like 16 pounds and generates a considerable amount of heat. With it off the under side is really open and I don't feel any heat off the spyder even on really warm days.

[MidTNDawg]

NM

[pauly1]

In my opinion the weight of the primary muffler is an advantage:low and biased toward the rear, something the F3 needs for traction off the line. I've done surgery on both the primary and secondary muffler sections: better sound tone without the harshness. Adding a baffle back into the system that you just opened up is to add back pressure which is needed for low to mid-range performance. Why spend that king of money? Plus I've had issues with the aftermarket bypass sections in which the rods have cracked loose from the pipe sections.

[mstngken]

You will lose low end power mid range power and you will also make it sound like a 16 year old's Honda civic with a fart can muffler.

[MidTNDawg]

Pretty much what I expected the results to be.