🔥 Borla 140085 Cat-Back Exhaust System (40085): Unleash Your Vehicle's Performance! Review

Sounds great on my 2013 F-150 5.0 with built in resonator. Very aggressive but not annoying, the hum is minimal but you know for sure the silencer is there. A little louder than at freeway speeds, but I got used to it quickly, and it's not intrusive at all. It sounds best at 1500-2500 rpm.

That was exactly the sound I was looking for. I have a 2012 F-150 with a 5.0 V8 and this muffler has such a clean deep rumble. I've watched countless YouTube videos trying to understand the different sounds of the Magnaflow, Flowmaster, and Borla. I chose this one and couldn't be happier. If you're on the fence like me, just buy it.

I have this for my 5.0 F150. I have to say based on the sound clips and reviews it's louder than I expected. I wanted something quiet until I wanted something loud. It's loud and gets louder the harder you step on the gas. I didn't hear any hum, which is good because I didn't want that in my daily driver either. Overall I'm satisfied, just wish it was a little quieter while I didn't want it to be loud.

Equipped with my 2005 Silverado with 5.3 and headers. Since my tuck is so low, I had to back up before the axle. It's very noisy at certain rpm and really isn't that bad at 75mph on the freeway in accelerated mode. At 35-45 km/h it hums heavily. Although I wouldn't change anything. Love how loud it is now. This setup replaced my Magnaflow side exhaust and is much louder.

Awesome exhaust from a great brand! Love Borla mufflers! Installed on a WRX hatchback and the sound is awesome! It's loud enough to hear the engine purr, but not obnoxious. Very quiet at low revs and shines at around 3.5 km and a deep rumble on cold starts at around 1.5 km/min. No rumble on the freeway and no annoying shrill engine sound. Don't let the small diameter fool you as it can produce a really deep tone.

Trust other reviews. This exhaust is very quiet. While it's needed in your recreational or soccer van, it's not what you need in a weekend warrior or drag car. I'm sure it has more power but turns your muscle car into an eco-friendly golf car. Too quiet. For reference, I put her on a '99 Camaro with a 6.0L nitrogen cam engine through long headers and an X-pipe. AWAY. TOO MUCH OF. CALM. I go back to my SLP screamers.

This was my first Borla purchase and I was immediately disappointed, I bought two mufflers from 40085 and each has a crooked inlet/outlet, see pic. They also left excess welding wire along the seam from one of them. I'm used to buying mufflers for $20-$60 with good finishes and straight entry and exit. Borla's entrance and exit are not round either, but strikingly oval. Long story short, for $140 this craftsmanship sucks, but hopefully they sound good.

First Impression: I welded it at the store for $45 and left the resonator in. It's very quiet to me, but it has no hum! It has a nice deep sound when starting and driving. It also barks a bit under acceleration, but not overly aggressively. I think it will get better as it breaks a bit and in the long run. I was just expecting it to be louder, and now that I know what it sounds like, a plain trumpet would be fine. But I'm happy and it sounds very good! This would be great for someone like me…