3.5'' Downpipe Exhaust For 2017-2025 L5P 6.6L Duramax Diesel
3.5'' Downpipe Exhaust For 2017-2025 L5P 6.6L Duramax Diesel
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Description
The downpipe on your turbocharged vehicle is directing the exhaust gases out of the turbine housing into the exhaust system. An aftermarket downpipe will typically be larger in diameter and either uses a high-flowing catalytic converter or remove the catalytic converter altogether.
By removing the factory downpipe and replacing it with a high flowing unit you are allowing the turbo to more efficiently move gases away from the turbine which creates more power. Since the factory restrictions are now gone you can increase the boost on the vehicle as the factory downpipe is a choking point for performance.
Key Features
- 3.5-Inch Large Diameter Design: Features a larger internal diameter than the stock pipe for dramatically increased exhaust flow, reducing turbo lag and enhancing throttle response.
- Turbo Efficiency Optimization: Accelerates exhaust gas exit from the turbine housing, minimizing backpressure to allow the turbo to spin faster and produce more boost and power.
- Eliminates Factory Restriction: Directly replaces the restrictive OEM downpipe, solving the exhaust choking point and providing the essential foundation for further performance mods (e.g., tuning, increasing boost levels).
- Precision Fit and Durability: Constructed from high-quality stainless steel for superior corrosion resistance and long-term reliability under extreme heat.
Specification
- Application: Downpipe Exhaust
- Material: Stainless Steel
- Surface: Mirror Polish
Fitment
- 2017-2025 Chevrolet Silverado & GMC Sierra 2500 & 3500HD 6.6L Duramax
- Will not fit Cab & Chassis trucks.
Fast Shipping Policy
Your order will be dispatched within 1-2 business days, and the package will arrive within your order's estimated date.
Easy Return Policy
Every order comes with a 14-day free return, which means you don't have to pay for a return slip.
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- One-Year Warranty
- 14-Day Return
- 4-12 Days To Arrive
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Frequently Asked Questions
What is a delete tuner?
A delete tuner is a device that reprograms yourtruck's ECM (computer) to turn off emissionssystems like the DPF, EGR, and DEF, allowing yourtruck to run without those components
Can l use a delete tuner withoutphysically removing TheDPF/DEF/EGR parts?
You MUST remove your DPF(Diesel ParticulateFilter), as the filter will clog and stop all exhaust flowwhen shut off. You will no longer need DEF(DieselExhaust Fluid), and you may remove your DEF tankif you wish, or it can sit empty. The EGR may remainas is, but we recommend removing the physicalparts as well.
Is a Delete Tune bad for mytruck's engine?
Quite the opposite. In fact, many customers reportimproved engine life, smoother shifting, and betterfuel economy (typically 3-5 MPG gains) when usinga quality delete tuner.
What's the difference between adelete tuner and a delete tune?
The tuner is the hardware device. The tune is thesoftware file that gets uploaded to your truck's ECM.Your delete tuner includes a delete tune when youpurchase from us.
Do delete tuners void my warranty?
Yes. Any emissions-related modification, includingtuning, can void the manufacturer's warranty. Manycustomers wait until after their warranty expiresbefore deleting.
Do l need a mechanic to install thetuner? How long does installationtake?
Not necessarily. Many of our customers install their delete tuner themselves in under 30 minutes. We include easy-to-follow instructions, and our support team is available if you need help.
Will my truck pass inspection oremissions testing with a deletetuner?
No. Delete tuners disable emissions systems, so your truck will not pass emissions tests in areas where they're required. Some states have exemptions (e.g. heavy-duty or rural-use trucks).
Can l go back to stock afterinstalling a delete tuner?
Yes. However, in most cases you will have to have the ECM flashed at the dealership. If this is a concern, contact our team and we can explain further.
Is the delete tune VlN-locked?
Yes. All delete tunes are VIN specific and will only work on one truck. The tuner (hardware device), may be used on multiple vehicles for diagnostic or monitoring purposes where applicable.
What support do l get with my tuner?
We offer lifetime customer support, step-by-step install guides, and remote help from our tuning team. You're never left hanging, even after the sale.