Mod Database · Performance
cp-e QKspl Catted Downpipe (3.5L EcoBoost)
Removes the factory catalytic restriction immediately downstream of the turbos, which matters most once a tune is already pushing extra boost. Needs a retune to avoid a check engine light, and it is not legal for street use in emissions states.
- Real price spread
- $1,395–1,398
- Install
- 6-8 hrs
- Difficulty
- Hard
- Owner rating
- 3.9 / 5
Where to buy it
3 confirmed prices across 3 listings, re-checked nightly. Cheapest first.
- CJ Pony Partscp-e QKspl 3" Catted Hi-Flow Downpipe, Ford F-150 Raptor 3.5L EcoBoost (2017+)$1,395Order
- Lethal Performancecp-e QKspl 3" Catted Hi-Flow Downpipe, Ford F-150 Raptor 3.5L EcoBoost (2017+)$1,395Order
- AmericanTruckscp-e QKspl 3" Catted Hi-Flow Downpipe, Ford F-150 Raptor 3.5L EcoBoost (2017+)$1,398.36Order
Prices pulled from each seller’s own listing data · last checked 2026-07-28. No seller pays for placement.
Before you order
Manufacturer page: cp-e
Runs in the same lane
5 Star Tuning Custom Tune Package (93 Octane)
Good for 60 to 90 horsepower and a transformed throttle response on the 3.5 EcoBoost, with no hardware required. It is also the fastest way to trip a warranty flag, so know the dealership's stance before flashing it.
Whipple Gen 6 3.8L Supercharger Upgrade (5.2L Raptor R)
Replaces the factory 2.65L Eaton on the supercharged 5.2 with a larger Whipple twin-screw, worth well north of 200 horsepower on the right fuel and calibration. It also ends the powertrain warranty on a truck that is almost certainly still covered, so have that conversation with yourself first.
aFe Momentum GT Cold Air Intake
More airflow and a noticeably louder turbo spool, though the dyno gains alone do not justify the price. Most owners buy it for the sound and because it pairs cleanly with a tune.