Punisher DPF,EGR Delete Single Tune Half Throttle Autocal for Duramax 2001-10

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Affordable Delete Tuning From the Track

Reaper Single Tune Half Throttle Autocal
Choose 1 of 4 available power levels (+50, +60, +100 or +120 HP)
Deletes DPF, CAT & EGR Without Codes
Clear Codes and Log Data
Tunes can be Updated/Replaced Via Download

IMPORTANT: Designed to use with the DPF Removed. Using with DPF still in place may result in reduced performance, high EGT's and possibly fire. To view our Tuner/DPF Delete Packages Click Here.


  • 2001-10 Chevy Silverado Duramax Diesels
  • 2001-10 GMC Sierra Duramax Diesels

Punisher Performance Reaper Autocal

DPF, CAT, and EGR Deletion

With the Reaper Autocal from Punisher, you can safely delete your DPF, CAT and EGR without throwing codes or putting your truck into limp mode. Choice of 4 power levels (See table below). We don't expect anything to go wrong, but if it does, Punisher Performance is among the best in the business at serving it's customers. Finally, should you continue to upgrade your truck, Punisher can update the tuning via email. Besides supplying what you need, these tuners can give you what you want.

2001-10 Duramax Power Levels (may vary by engine)

Economy + 50 HP
Tow + 60 HP
Mild + 100 HP
Hot + 120 HP


True Customization

Not only is the tuner initially programmed to your specific truck as it is, but the truly great thing about these Autocals is that you can do so much more than just program! You can purchase additional tunes for $60 each or upgrade to the full DSP5 software with all four tunes and a switch for an additional $250. You can log data and you can clear DTC's. For customers who frequently upgrade their truck, tunes and data logs can be exchanged with Punisher Performance via email!

Full flashing support for the DSP5 system is currently available only for LB7, LLY, LBZ, and LMM Duramax trucks.

NOTE: For off-road or race use only.

More Information
Performance Type N/A
SKU ReaperHalfDuramax
Diesel Engine Duramax 6.6L LMM 2007.5-10, Duramax 6.6L LBZ 2006-2007, Duramax 6.6L LLY 2004.5-2005
OEM Make GMC, Chevrolet
OEM Model Sierra/Denali 2500, Sierra/Denali 3500, Silverado 2500HD, Silverado 3500HD
Specific Year N/A
Brand Punisher Performance
Transmission Automatic, Manual
Drive N/A
Tuner Type Added Power & Performance Across The Board
Supports EGR Racing Kit? Yes
Instructions Included in Box

Coupon Codes are entered on the shopping cart before going to checkout. If you have issues using the coupons, please contact us.

Exclusive Freedom Diesel Performance Discounts

Save $45 On Any Order Over $699 w/ Coupon Code SAVE45QUICK


All of our packages include multiple related items at a special package discount. Our packages are designed to make your life easier, usually including all the parts you need to achieve a specific modification.

Price Matching Beating!

We want to make sure you get the best deal possible on your parts. We do our best to ensure we have the best prices in the industy, however, if you find an item cheaper, let us know and we will happily match or beat the price.

Discounts For Shops & Dealers

If you are an installation shop or dealer, give us a call or email for details on our dealer program. We are able to discount most items for shops.

Phone: 855-432-4733 9 AM - 6 PM EST Monday - Friday
Email: [email protected]

We Strive For Extremely Quick Shipping.

Whether you need a part to fix a downed truck, a performance part to get the edge on your competitors on race day, or just something to improve the look or functionality of your vehicle; freedom diesel performance you covered!

We understand the only reason you are purchasing a part, is because you really need it or really want it. We do everything in our power to ensure you get the purchased item as soon as possible.

*** Orders placed before 2 PM Est - Usually ship the same day. ***

Estimated Delivery Times:

- Tuners / Programmers by themselves - 2 to 3 Business Days

- Performance / Race Packages - 2 to 5 Business Days

- General Diesel Performance Parts - 2 to 5 Business Days 

- Lighting, Accessories, Etc - 2 to 7 Business Days 

(Alaska / Hawaii Add 3 Business Days)

Easy Return / Exchange Process

If for some reason, you order the incorrect product, or do not need the product prior to using it, we will accept it back as a return for refund or exchange up to 30 days from delivery. Must be in new, un-used condition with original packaging.

Due to credit card processing fees, shipping, and wear and tear to the packaging often occuring during shipping, returns may be subject to a 20% restocking fee.

If you need to setup a return or exchange, please contact us for an RMA#

Warranty Process

If the product you receive is damaged or defective, please contact us immediately for assistance. In most cases, we can send you a return label and fix the problem very quickly.

Although many of the products that we offer, are not for sale or use in California, is it still important to realize the below warning.

Prop 65 Warning:Cancer & Reproductive Harm

Unless otherwise specified on the product page description, every product on this website contains chemicals, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.

Race Use products are for Closed Course Competition Use Only. Competition Use product should never be installed on a vehicle registered for highway use.