Borla #40349 Muffler - 2K mile review

Bringing this back to life...

So if I just swap out my stock muffler with this one and keep the factory tailpipe section and resonator, will it still drone?

PBR said:

Bringing this back to life...

So if I just swap out my stock muffler with this one and keep the factory tailpipe section and resonator, will it still drone?

Click to expand...

I have a similar set up and the drone was pretty bad at 1500 to 2000 RPM. I had an exhaust shop install about a 30" helmholtz resonator or "J" pipe between the factory resonator and new muffler which almost completely eliminated the drone.

I installed this Borla 40349 in the stock location with the resonator still in place and stock tailpipes, so just a muffler swap and a few inches of 3" tubing.

So far so good, stock sound at idle. Definitely louder on start-up and when hard on the skinny pedal. Very livable for a daily driver.

PBR said:

I installed this Borla 40349 in the stock location with the resonator still in place and stock tailpipes, so just a muffler swap and a few inches of 3" tubing.

So far so good, stock sound at idle. Definitely louder on start-up and when hard on the skinny pedal. Very livable for a daily driver.

Click to expand...

How is the drone? I'm about the install this muffler and considering a resonator delete + Helmholtz pipe, but curious about just the muffler replacement.

Let us know if anyone needs a quote. We often have these mufflers in stock and can offer very good pricing. We have seen a few different platforms using these mufflers. It seems to be a popular low cost option.

TallSkinnyMatt said:

How is the drone? I'm about the install this muffler and considering a resonator delete + Helmholtz pipe, but curious about just the muffler replacement.

Click to expand...

No drone at all. My set up is all stock except for the Borla muffler and around 3" of tubing.

Installed this muffler with a resonator delete and it droned liked crazy! I did a HelmHoltz chamber, but still had some drone around 1700 rpm. I would recommend leaving the resonator in for whoever does this. I said screw it and bought a Corsa, but I really did enjoy the sound when I had it for a week.