6.6 LBZ Duramax EGR delete kit with EFI Live AutoCal V3 (2006-2007)
The 2006, 2007 6.6 LBZ Duramax EGR Delete Kit with EFI Live AutoCal V3 is designed to enhance your vehicle's performance by removing the EGR system. This delete kit optimizes engine efficiency, reduces soot recirculation, and provides custom tuning options for improved power and throttle response.
What's included in LBZ delete kit
-
EFI Live AutoCal V3 tuner - Flashes the supplied ECM calibration and supports diagnostic scanning and data logging. Available engine calibrations provide several confirmed power levels.
-
4-inch downpipe-back exhaust - Replaces the factory CAT-equipped exhaust section with a T-409 stainless steel system. Clamps, hangers, and fasteners are included.
-
EGR valve and cooler delete kit - Removes the EGR valve and cooler from the recirculation circuit. The assembly includes an aluminum bypass plate, steel fasteners, silicone tubing, and sealing components.
-
Muffler selection - Choose a straight-pipe configuration for a louder note or add the muffler for lower sound output.
-
Optional TCM calibration - Adds transmission-specific programming for the Allison automatic without changing the selected ECM horsepower level.
-
Complete delete kit - Includes the matched tuning and delete components, hardware, clamps, and fasteners needed for the setup, so you do not have to source the main parts separately.
Vehicle compatibility
-
Years: 2006, 2007
-
Make: Chevrolet, GMC
-
Models: Silverado 2500HD, Silverado 3500, Sierra 2500HD, Sierra 3500
-
Engine: 6.6L Duramax LBZ
-
Body Style: Pickup
Performance & tuning
-
No forced regens
-
Enhanced towing performance
-
Improved MPG
-
Better throttle response
-
Increased reliability
-
Complete delete kit with matched components for straightforward fitment and no need to source parts separately
Without TCM Tuning
|
Power Level |
+HP |
Best for |
|---|---|---|
|
Stock |
0 HP |
Factory-style power and everyday driving |
|
Level 1 |
+30 HP |
Daily driving and light-duty use |
|
Level 2 |
+65 HP |
Balanced daily driving with a noticeable power increase |
|
Level 3 |
+100 HP |
Drivers looking for stronger acceleration and power delivery |
|
Level 4 |
+130 HP |
Maximum available engine power without TCM tuning |
With TCM Tuning
|
Power Level |
+HP |
Best for |
|---|---|---|
|
Stock |
0 HP |
Factory-style engine output with revised transmission calibration |
|
Level 1 |
+30 HP |
Daily driving with coordinated engine and transmission tuning |
|
Level 2 |
+80 HP |
Balanced street use with stronger power and transmission response |
|
Level 3 |
+120 HP |
More aggressive street driving with higher engine output |
|
Level 4 |
+150 HP |
Maximum available power with matched engine and transmission calibration |
Kit performance outcomes
|
Metric |
Expected Change |
Notes |
|---|---|---|
|
Horsepower |
0 to +150 HP |
Determined by the selected kit ECM calibration |
|
Throttle response |
More immediate response |
Varies with tune, load, and truck condition |
|
Towing performance |
Stronger response under load |
Does not increase the truck’s rated towing capacity |
|
Fuel economy |
Approximately +5-15% |
Actual MPG change depends on tune level, tires, gearing, vehicle condition, load, and driving style |
|
Data logging |
Real-time logging through AutoCal V3 |
Allows operating data to be recorded and reviewed for diagnostics and tune evaluation |
|
EGTs |
Approximately 100-200°F lower |
Lower exhaust temperatures under sustained load; actual change varies by setup |
Which configuration should you choose?
|
Option |
Recommended for |
|---|---|
|
No TCM Tune |
Drivers not requiring transmission tuning |
|
Add TCM Tune |
Enhanced transmission performance |
|
No Muffler |
Maximum flow and sound |
|
With Muffler |
Reduced noise |
How the delete kit works on your 6.6 Duramax
-
EGR hardware stops exhaust recirculation into the intake.
-
Block-off components close the modified EGR passages.
-
The exhaust replaces the factory CAT-equipped section.
-
AutoCal V3 flashes the selected ECM calibration.
-
Optional TCM tuning adjusts Allison transmission behavior.
Installation information
This LBZ EGR delete kit includes installation instructions, allowing those with basic mechanical skills to perform the installation themselves.
Technical specifications
|
Specification |
Detail |
|---|---|
|
Product type |
EGR/CAT modification delete kit with ECM tuning |
|
Tuner |
EFI Live AutoCal V3 |
|
Transmission calibration |
Optional Allison TCM tune |
|
Pipe type |
4-inch downpipe-back |
|
Muffler options |
No Muffler or With Muffler |
|
Material |
T-409 stainless steel |
|
Pipe hardware |
Clamps, hangers, and fasteners |
|
Materials |
Aluminum bypass plate, steel fasteners, silicone tubing, and sealing components |
|
Physical systems modified |
EGR valve/cooler and CAT-equipped exhaust section |
|
Factory DPF |
Not fitted to the LBZ platform |
|
Factory DEF/SCR |
Not fitted to the LBZ platform |
|
ECM replacement |
No ECM swap used; calibration is flashed through AutoCal V3 |
|
Intended application |
Off-road and competition use |
No More Emissions Codes
Installing and configuring this LBZ Duramax delete kit will eliminate emissions-related dashboard warnings associated with the EGR system.
EGR flow codes
|
Code |
Description |
|---|---|
|
P0401 |
Flow insufficient |
|
P0402 |
Flow excessive |
|
P0404 |
Range or performance |
Control-circuit codes
|
Code |
Description |
|---|---|
|
P0403 |
Control-circuit fault |
|
P0405 |
Position sensor circuit low |
|
P0406 |
Position sensor circuit high |
Position codes
|
Code |
Description |
|---|---|
|
P1404 |
Closed-position performance |
Note: The LBZ has no factory DPF or DEF - this delete kit removes the EGR and adds tuning. Send your VIN, and our diesel specialists will confirm the exact kit within minutes.