Check if this fits your vehicle
Take your 2015–2016 LML 6.6L Duramax to the next level with this 4" downpipe-back DPF & CAT delete exhaust system. Designed for heavy-duty applications, it removes factory flow restrictions to unlock stronger performance and more efficient exhaust output.
Check if this fits your vehicle
| Year | Make | Model | Submodel | Engine |
|---|---|---|---|---|
| - |
Upgrade your truck with this 6.6 LML Duramax DPF delete exhaust system from Vigor Diesel. Designed as a high-flow 4" Downpipe-Back exhaust, it replaces the restrictive factory DPF to improve exhaust flow, reduce back pressure, and deliver a stronger diesel sound.
Constructed from 2mm thick T-409 stainless steel, offering superior heat resistance and a longer lifespan than the original aluminized system.
Removing the original DPF and catalytic converter reduces back pressure; a hardware upgrade alone can boost 24 horsepower and 38 lb-ft of torque; with ECU tuning, up to 150 horsepower can be added.
A clear exhaust system prevents heat buildup. This system can reduce exhaust temperatures by up to 220°F (122°C), protecting turbochargers and engine components and extending their lifespan.
No need to clean/replace the DPF ($500-$1000 annually), no need to add diesel exhaust fluid (DEF), and no wasted fuel due to regeneration; projected savings of up to $26,000 over 300,000 miles.
Unleash the distinctive whine of a diesel turbocharger and improve turbo response.
| Feature | Factory Exhaust | Vigor Diesel Upgrade |
|---|---|---|
| Exhaust Path | Restricted by DPF and CAT | Straight-through high-flow design |
| Engine Response | Slower throttle response | Faster turbo spool |
| Heat Management | Higher exhaust heat | Up to 220°F lower EGT |
| Power Potential | Limited airflow | +24 hp / +38 lb-ft hardware gains |
| Exhaust Sound | Muted | Deeper diesel tone with turbo whistle |
This 6.6 Duramax DPF delete exhaust system fits:
| 5 Star |
|
|
0% |
| 4 Star |
|
|
0% |
| 3 Star |
|
|
0% |
| 2 Star |
|
|
0% |
| 1 Star |
|
|
0% |
