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The factory airbox on the 2015–2017 F-150 3.5L EcoBoost is designed for silence, not flow. Its restrictive baffles and paper filter choke the twin turbos before they even spool up — leaving torque and throttle response on the table.
The Flashark Cold Air Intake Kit replaces the entire factory intake tract with a black powder-coated aluminum mandrel-bent intake tube and a high-flow dry filter. The result: less restriction across the entire RPM range, faster turbo spool, and audible intake and bypass sounds that the stock box completely muffles. Expect 8–12 HP and 10–15 lb-ft of torque gain on the stock tune, with more available when paired with a custom calibration.
Bolt-on installation takes about 60 minutes with basic hand tools — no cutting, no drilling, no permanent modifications. Includes a heat shield to isolate the filter from engine bay radiant heat, reducing intake air temperatures under load.
Key Features
8–12 HP / 10–15 lb-ft Torque Gain — Measurable improvement on the stock tune; additional gains with custom calibration
Faster Turbo Spool — Mandrel-bent aluminum intake tube eliminates factory baffles and restrictions, letting the twin turbos breathe freely
Audible Turbo and Bypass Sounds — Open-element dry filter uncovers the induction and blow-off noises the stock airbox silences
Black Powder-Coated Aluminum Tubing — Heat-resistant, corrosion-resistant finish that looks clean under the hood and won't oxidize over time
Dry High-Flow Filter — No oil required; washable and reusable with a service interval of 15,000–20,000 miles under normal conditions
Heat Shield Included — Powder-coated steel shield isolates the filter from engine bay radiant heat, reducing intake air temperatures under load
Bolt-On Installation — ~60 minutes with basic hand tools; no cutting, drilling, or permanent modifications required
Factory MAF and PCV Compatible — Retains all factory sensor and breather connections; no tuning required for basic operation
Designed for 3.5L EcoBoost Gen 1 (2015–2017) — Not compatible with 2.7L EcoBoost, 3.5L naturally aspirated, or 5.0L Coyote engines
Specifications
Brand: Flashark
SKU: FLIS25101
Material: Aluminum piping
Tubing Finish: Black powder-coated
Filter Type: Dry (no oil required)
Filter Color: Red
Filter Service Interval: 15,000–20,000 miles under normal conditions
Heat Shield: Powder-coated steel
Horsepower Gain: 8–12 HP (stock tune)
Torque Gain: 10–15 lb-ft (stock tune)
Installation Time: ~60 minutes
Installation Difficulty: Beginner to intermediate
Warranty: 1 Year
Package Includes
1 × Black powder-coated aluminum mandrel-bent intake tube
1 × Red high-flow dry air filter
1 × Powder-coated steel heat shield
2 × Silicone coupler set
5 × Stainless steel hose clamps
1 × Mounting brackets and hardware kit
1 × Installation guide
| Years | Make | Model | Engine |
|---|---|---|---|
| 2015 | Ford | F-150 | 3.5L V6 EcoBoost |
| 2016 | Ford | F-150 | 3.5L V6 EcoBoost |
| 2017 | Ford | F-150 | 3.5L V6 EcoBoost |
Q: What vehicles does this intake fit, and what does it NOT fit?
A: This intake is designed specifically for 2015–2017 Ford F-150 trucks equipped with the 3.5L EcoBoost twin-turbo V6 (Gen 1). It does NOT fit the 2.7L EcoBoost, 3.5L naturally aspirated V6, 3.5L PowerBoost hybrid, 5.0L Coyote V8, or the 2018+ 3.5L EcoBoost (Gen 2) which uses a different intake tract and sensor layout. Trim level (XL, XLT, Lariat, King Ranch, Platinum, Limited) does not affect compatibility as long as the engine matches. For 2017 models, compare your factory intake layout with the product images — mid-year production changes can affect fitment.
Q: How much horsepower and torque will this intake add on a stock 3.5L EcoBoost?
A: On the stock tune, expect 8–12 HP and 10–15 lb-ft of torque at the wheels. The 3.5L EcoBoost responds well to intake upgrades because the factory airbox uses restrictive baffles that choke the twin turbos. Most owners notice faster turbo spool and sharper throttle response more than the peak numbers. With a custom ECU calibration, gains can reach 15–20 HP. The intake alone is an airflow enabler — not a miracle power adder.
Q: Do I need a tune after installing this intake?
A: No — a tune is not required. The intake retains the factory MAF sensor housing diameter and PCV connections, so the stock ECU can compensate for the increased airflow within its learned fuel trim range. However, a custom tune will unlock the full potential of the intake (and the EcoBoost platform in general). If you experience a check engine light after installation, it is almost always caused by an installation issue (loose coupler, unmetered air leak, damaged MAF sensor wiring) — not the lack of a tune.
Q: Will this intake make the turbos louder?
A: Yes — this is one of the most noticeable changes. The factory airbox uses large plastic resonators and baffles specifically designed to silence intake and turbo noise. Replacing it with an open-element filter uncovers the turbo spool whistle, the intake rush under throttle, and the bypass valve vent (blow-off sound) when lifting off the throttle. It's an audible upgrade that many EcoBoost owners consider the primary reason to install a cold air intake.
Q: Does the included heat shield actually reduce intake temperatures?
A: The powder-coated steel heat shield isolates the filter from direct engine bay radiant heat — particularly from the exhaust manifolds and turbocharger housing on the passenger side. It significantly reduces heat soak at idle and low speeds compared to a bare open-element filter. At highway speeds, ambient airflow through the grille and fender area dominates, and intake temperatures approach ambient. It is not a sealed cold air box, but a properly designed shield that balances airflow access with thermal isolation.
Q: Is the filter dry or oiled? How do I clean it?
A: The included filter is a dry synthetic media filter — no oil required. This means no risk of over-oiling that can contaminate the MAF sensor (a known problem with oiled cotton-gauze filters on EcoBoost engines). To clean: remove the filter, tap out loose debris, wash with low-pressure water (clean side to dirty side), allow to air-dry completely, and reinstall. Service interval: 15,000–20,000 miles under normal conditions. Inspect more frequently if you drive on dirt roads or in dusty environments. Never install the filter while damp.
Q: Can this intake cause a check engine light (CEL)?
A: When installed correctly, this intake should not trigger a check engine light. The most common causes of a post-installation CEL are: (1) loose coupler or clamp creating an unmetered air/vacuum leak downstream of the MAF sensor, (2) MAF sensor installed backwards or with a damaged O-ring, (3) MAF sensor wiring harness stretched or pinched during installation, or (4) PCV breather line disconnected or kinked. If a CEL appears, check all connections before assuming a product defect — 95% of post-installation CELs are installation-related.
Q: Will this intake improve fuel economy?
A: Under steady-state highway cruising, reduced intake restriction can marginally improve volumetric efficiency, potentially yielding a small MPG improvement (typically 0.5–1.5 MPG). However, two factors work against this: (1) the EcoBoost's turbocharged nature means the engine is already operating at positive manifold pressure under load, and (2) the more engaging turbo sound tends to encourage more aggressive throttle use. Treat any MPG improvement as a bonus, not a guaranteed outcome.
Q: Will this void my factory warranty?
A: This intake is a bolt-on component that requires no cutting, drilling, or permanent modifications. Under the Magnuson-Moss Warranty Act, a manufacturer cannot void your warranty simply because you installed an aftermarket part — they must prove the aftermarket part caused the specific failure. That said, if a dealership attributes an engine issue to the intake (e.g., MAF sensor failure from an improperly oiled filter — which does not apply here since this is a dry filter), they may deny that specific claim. Keep your original intake to swap back if needed.
Q: How difficult is the installation? What tools do I need?
A: Installation is rated beginner to intermediate difficulty and takes approximately 60 minutes with basic hand tools. You'll need: flathead and Phillips screwdrivers, 8mm, 10mm, and 13mm sockets with ratchet and extension, and pliers for factory hose clamps. The process: disconnect the negative battery terminal → unplug the MAF sensor → remove the factory intake tube and airbox → install the heat shield bracket → mount the intake tube and couplers → install the filter → reconnect the MAF sensor → reattach the battery → start the engine and check for smooth idle. After a few heat cycles, re-tighten all clamps.
Q: What is the intake tube made of? Will it rust or corrode?
A: The intake tube is mandrel-bent aluminum with a black powder-coated finish. Aluminum does not rust, and the powder-coated finish provides an additional layer of protection against heat, corrosion, road salt, and under-hood chemicals. Mandrel bending means the tube maintains a consistent internal diameter throughout — no crimps or restrictions at the bends. The black finish also matches the factory engine bay aesthetic and stays looking clean even after years of use.
Q: What is the return and warranty policy?
A: Flashark offers a 14-day free return policy on unused items in original packaging, and a limited warranty covering manufacturing defects. If you receive a defective or incorrect item, Flashark covers return shipping. For fitment issues or change-of-mind returns, contact service@flasharkracing.com before initiating a return. Always verify engine compatibility before ordering — returns due to incorrect engine selection (e.g., ordering for a 5.0L V8 or 2.7L EcoBoost) are considered buyer error.
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