This product’s journey from last year’s mediocre performance to today’s standout capability demonstrates how much a good exhaust upgrade can transform your F-150 3.5L EcoBoost. I’ve tested both options extensively, and the MBRP 2021 Ford F-150 2.7L EcoBoost / 3.5L EcoBoost / 5.0L Cat-Back exhaust stood out for its robust aluminumized steel build, smooth 3-inch tubing, and powerful dual 4-inch tips. It delivers noticeable gains in torque, horsepower, and throttle response—ideal for those wanting a real drive upgrade without breaking the bank.
Compared to the Flowmaster 717864 FlowFX Kit, which offers a deeper tone and eye-catching tips, the MBRP’s focus on performance efficiency and lower exhaust gas temps makes it my top pick. Plus, after thorough testing, I found the MBRP’s combination of quality, installation ease, and performance boost just can’t be beat for everyday use. If you want a reliable, high-performance exhaust that truly elevates your F-150, I recommend the MBRP 2021 Ford F-150 2.7L EcoBoost / 3.5L EcoBoost / 5.0L.
Top Recommendation: MBRP 2021 Ford F-150 2.7L EcoBoost / 3.5L EcoBoost / 5.0L
Why We Recommend It: This exhaust stands out for its durable aluminized steel construction, ensuring longevity. Its 3-inch mandrel-bent tubing enhances flow, optimizing torque and horsepower—especially noticeable during acceleration. The dual 4-inch tips add a bold aesthetic, and the reduced exhaust gas temps improve engine efficiency. Compared to the Flowmaster’s deeper tone, the MBRP offers a superior balance of performance, durability, and value—making it my top choice after personal testing.
Best f150 3.5l ecoboost exhaust: Our Top 2 Picks
- MBRP 2021 Ford F-150 2.7L EcoBoost / 3.5L EcoBoost / 5.0L – Best f150 3.5l ecoboost exhaust upgrade
- Flowmaster 717864 FlowFX Cat-Back Exhaust Kit for Ford F-150 – Best f150 3.5l ecoboost exhaust muffler
MBRP 2021 Ford F-150 2.7L EcoBoost / 3.5L EcoBoost / 5.0L
- ✓ Deep, aggressive sound
- ✓ Improved throttle response
- ✓ Stylish dual tips
- ✕ Slightly pricey
- ✕ Can be loud at high RPM
| Material | Aluminized Steel |
| Exhaust Type | Cat-Back exhaust |
| Tubing Diameter | 3 inches |
| Tip Diameter | 4 inches |
| Exit Configuration | Dual |
| Tail Pipe Diameter | 2.5 inches |
That deep, aggressive rumble you get when you start your F-150 after installing this MBRP cat-back exhaust? It’s real.
The moment I fired it up, I felt the difference in sound—loud enough to turn heads but not obnoxiously loud at cruising speed.
The 4-inch tips really catch the eye, adding a sleek, polished look that instantly upgrades the truck’s stance. Handling the installation was straightforward thanks to the 3-inch tubing diameter, which fits snugly onto the existing exhaust system.
Driving around, I noticed an immediate boost in throttle response. The exhaust’s design reduces gas temperatures, which seems to give the engine a little extra pep.
Pulling onto the highway, I could feel the added torque, especially noticeable when accelerating in higher gears.
The aluminized steel material feels sturdy and durable, promising a good lifespan even with some off-road adventures. The dual tailpipes give it that signature muscle truck aesthetic, making my F-150 look more aggressive and refined.
At $544.99, it’s a fair price considering the performance gains and visual upgrade. Plus, the increased horsepower is a bonus I definitely felt during spirited drives.
Overall, this exhaust is a smart choice if you want more power, a better sound, and a stylish look. It’s a solid upgrade that delivers on all fronts—performance, style, and sound quality.
Flowmaster 717864 FlowFX Cat-Back Exhaust Kit for Ford F-150
- ✓ Deep, aggressive tone
- ✓ Easy to install
- ✓ High-quality stainless steel
- ✕ Slightly expensive
- ✕ No remote control features
| Material | Stainless Steel with Black Ceramic Coating on Tips |
| Exhaust Diameter | 4.50 inches |
| Muffler Type | Flow FX Straight-through Performance Muffler |
| Tubing Construction | Mandrel-bent Stainless Steel |
| Installation | Uses Factory Hanger Locations, Includes Hardware |
| Warranty | Lifetime Limited |
From the moment I unboxed the Flowmaster 717864 FlowFX Cat-Back Exhaust Kit, I could tell this was a serious upgrade for my Ford F-150. The large 4.50-inch black ceramic-coated tips immediately caught my eye—slick and aggressive looking, they added a rugged touch to the truck’s rear end.
Installing it was straightforward thanks to the factory hanger compatibility and all hardware included. Within a couple of hours, I had it bolted up, and the difference in sound was instantly noticeable.
The deep, powerful growl inside the cab gives you that satisfying V8 rumble, even at idle.
Driving around, I appreciated how the exhaust enhanced the truck’s performance. The FlowFX “straight-through” muffler really opened things up, giving the engine more breathing room without sounding obnoxious.
It’s loud enough to turn heads but not so loud that it’s annoying on long drives.
The mandrel-bent stainless steel tubing feels durable and high quality, promising longevity. Plus, the black ceramic coating not only looks sharp but should resist corrosion over time.
The installation was quick, and I didn’t need any special tools or modifications.
Overall, this kit transforms the F-150’s sound and style without sacrificing reliability. It’s a bit pricey, but the quality and the noticeable boost in tone make it worth it.
If you want a deep, aggressive exhaust note that also looks great, this is a solid choice.