4"/5" Downpipe-Back Exhaust for 2011-2024 Ford 6.7 Powerstroke F250 F350 F450| SPELAB

Modern 2011-2024 Ford 6.7L Powerstroke diesels utilize DPF systems to meet emissions standards. However, these filters can clog over time, increasing exhaust backpressure and reducing fuel efficiency. Upgrading to a 4" or 5" downpipe-back exhaust system eliminates the DPF, reducing maintenance while improving airflow and mileage.

Specification

Benefits

Expect to see a significant increase in fuel mileage. If your DPF is plugged up your probably averaging about 13-14 mpg. More or less depending on the severity of the restriction. After deleting the DPF/CAT expect to get a combined mileage of 18-19 mpg.

• It removes the need to service the DPF at regular intervals (cleaning, replacement)
• A DPF delete will remove the possibility of a DPF failure which could cause expensive diesel repairs
• Due to less exhaust backpressure, the DPF delete increases exhaust flow and therefore increases the performance of your motor!
• Paired with an ECU remap, the DPF delete is proven to increase power and torque for all vehicles

Many users report that upgrading to a 5 inch downpipe-back exhaust on 2011–2025 Powerstroke trucks results in notable benefits: Quicker turbo spool‑up and smoother throttle response Lowered exhaust gas temperatures (EGT) and reduced backpressure Fuel mileage improvement in real-world tests (~5–10% gain)

Installation

• Estimated install time: ~1 hour with basic tools; faster on a lift.
• Short-bed or cab‑chassis trucks may require minor cutting/trimming.
• Kit includes clamps, hangers, and hardware—some OEM pieces may be reused.
• Tuner Required: DPF, CAT, SCR, and DOC deletions disable emissions sensors. A tuner with Powerstroke DPF delete capability ensures no check-engine lights or fault codes.

SPELAB 2011-2024 Ford 6.7 Powerstroke DPF Delete Kit Installation

SPELAB offers DPF delete race pipe for:

• Ford F-250 F-350 F-450 Super Duty 6.7L Powerstroke Diesel: 2011-2024
  
• Does not fit Cab & Chassis
• Note: Each DPF delete fits different year models - please select your exact vehicle year in the options before purchase.

Q1: What’s the difference between a Downpipe-Back and a Turbo-Back exhaust system?
A1: A downpipe-back system starts after the downpipe and retains the OEM downpipe, making installation easier. A turbo-back replaces the entire exhaust from the turbo, offering more performance but requiring more modification.

Q2: Will this 5” downpipe-back exhaust fit a cab & chassis model?
A2: No, this kit is designed for standard pickup configurations only (F-250, F-350, F-450). It is not compatible with cab & chassis models due to differences in frame and exhaust routing.

Q3: Will the 5-inch exhaust system cause excessive drone inside the cab?
A3: The 5" system may produce deeper tones and mild drone depending on cab insulation and presence of a muffler. For a quieter ride, choose the version with a muffler.

Q4: Does this system come with a muffler or resonator?
A4: There are two versions: one is a straight 5" race pipe with no muffler, and another includes a muffler. Be sure to choose the configuration that best suits your sound preference.

Q5: Can I install this kit in my home garage without a lift?
A5: Yes, installation can be done with basic hand tools on the ground. However, having a lift will speed up the process and make alignment easier.

Q6: Do I need to cut or modify anything to fit the 5" downpipe-back exhaust?
A6: In most cases, no. But for short-wheelbase or extended cab models, slight trimming may be required to ensure proper clearance and fitment.

Q7: Is the 5” system too large for a stock turbo setup?
A7: No, many users run a 5" downpipe-back exhaust on stock or mildly tuned 6.7 Powerstroke trucks with no issues. It provides enhanced flow and lower EGTs without hurting performance.

Q8: Will installing a 5-inch DPF delete exhaust improve towing performance?
A8: Yes, lower backpressure improves engine efficiency, reduces EGTs, and helps maintain power during extended towing or hill climbs—especially when paired with a tuner.

Q9: Can this exhaust system be used with aftermarket tuners like the Mini Maxx or EZ Lynk?
A9: Absolutely. It’s fully compatible with most DPF-delete capable tuners, including Mini Maxx, EZ Lynk, H&S, and EFI Live. Always verify tuner settings before installation.

Q10: Is this exhaust system street legal?
A10: No, this DPF-delete exhaust system is intended for off-road and race use only. Use on public roads may violate federal and state emissions regulations. Check local laws before purchasing.