2023-2025 GMC Sierra, Suburban, Yukon 3.0L LZ0 Duramax Tuning
Regular price
$1,399.00 CAD
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The LZ0 3.0 Duramax from GM has two separate controllers, one for engine and one for transmission. They can be calibrated independently.
In order to remotely tune the engine ecu, the ecu needs to be unlocked so it can be used with HP Tuners. You must select the E66 Global B Ecu Service, this requires the stock ecu be shipped to us for unlocking. Once unlocked the MPVi3 device can read/write to it without issue.
You require 6 HP credits to license the engine ecu. 4 HP credits to license the trans tcu.
Trans tuning is offered via HP Tuners with a unlocked TCU (requires shipping the tcu to us for unlock) or via Commander flash tool at this time. The TCU requires 4 credits. T87A harness adder is required for the commander.
You can request emissions compliant or OFF Road Tuning. Race Exhaust required for off road tuning.
It is CRUCIAL that the vehicle be in stock form with all emissions components installed and sensors connected prior to tuning the E66 ecu.
Calibrations
- Stock Optimized
- Heavy Tow +12 HP
- Light Tow +24 HP
- Sport +36 HP
- Performance +48 HP
- Race +60 HP
TUNE FILES ABOVE LIGHT TOW (24HP) WILL REQUIRE TRANS TUNING BE MANATORY
WE STRONGLY RECOMMEND NOT EXCEEDING THE 48HP PERFORMANCE TUNE LEVEL - THE STOCK TURBO IS THE LIMITING FACTOR.
PERFORMANCE HIGHER THAN 50HP MAY CAUSE DAMAGE TO THE TURBO.
Engine Calibration
- Increased throttle response (reduced or elimination of dead pedal)
- Increased torque in all power levels which allows earlier shifts when applicable for improved fuel economy
- Increased fuel economy due to optimal commanded fuel quantity, injection events, timing, and trans calibration
- Quicker response to driver input due to transient fuel, timing, VGT and Transmission calibration
- All safe non aggressive OEM detune / back down strategies are left intact or calibrated for the higher power levels that prevent premature failures
- All limiters that are safe to be removed are
- Exhaust brake memory and maximized exhaust brake
- Removal of auto start and stop as well as idle timers
- Tire sized changed and if opted for transmission calibration it is optimized for specific tire size / gear ratios
Transmission Calibration
- Extended transmission life, increased fuel economy, and better driving experience
- Increased line pressure and shift parameters that would reduce shift times, slip etc follow actual torque models in ECM and TCM
- This strategy increases fuel milage, reduces duty cycle wear, eliminates harsh or random inconsistent shifts or characteristics that do not match the drivers request, input or desired feel
- This is why it is important the engine calibration be done correct or our transmission calibrations be paired with our engine calibrations as the models have to mimic each other
- All calibrations match the increased torque as well as earlier torque to apply it most efficiently
- Refined shift points to get rid of the low rpm lazy feel at low driver inputs cruising or towing waiting on the turbo to spool that usually results in a lot of pedal travel and down shift
- Tire size, gearing, and larger turbos this is a must to tailor to that specific mod
- Earlier converter lock up to use increased torque & increase fuel milage as well as reduce temps
- Earlier unlock & downshift eliminates lag from time of driver input to acceleration
- Torque converter OEM partial lock or locked shifts to remove flare feel during shifts
- TC feel can be stock or increased for less slip to lock time in 2-6 gears
- These files are NON Cancellable and NON Refindable once ordered.