Function & Benefits
Performance Mini Maxx Race Tuner and Fuel Economy
The Mini Maxx is a great option for those drivers looking to save on fuel. Most truck owners who have installed the Mini Maxx have reported a substantial increase in mpg (sometimes up to 5 miles per gallon) when paired with the correct DPF delete pipe and EGR block-off kit.
Installing the Mini Maxx is simple and is among the fastest ways to remove all the emissions systems. People using the Mini Maxx never look back.
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Bring supported vehicle data into one display: The Mini Maxx V2 combines the available gauges with DTC access so owners can review supported readings without treating every displayed channel as compatible.
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Match functions to the vehicle: Power-level selection, SOTF and adjustment functions depend on the engine and PCM rather than being identical on every listed truck.
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Keep device support identifiable: V2-specific update resources and the device settings screen help support teams identify the correct software and reported error.
Best For
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Owners checking compatibility before committing to hardware: Compare the engine, PCM software and pickup/C&C restrictions first, rather than choosing by model year alone.
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Owners who want supported gauges and DTC access in one unit: Confirm the required sensors and readings for the specific application, especially LML boost and factory EGT data.
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2018-2021 Ram owners comparing complete and cable-only options: Choose the tuner package for the unit and accessories, or the cable-only option when a supported tuner is already available.
By installing this state-of-the-art DPF delete race tuner you will be able to delete the following emission systems:
DPF: Diesel Particulate Filter
Easily delete the components of your DPF system. The Mini Maxx allows you to remove all the components of your truck's DPF system while turning off all the codes for the related sensors, eliminating any check engine lights.
EGR: Exhaust Gas Re-circulation
Mini Maxx v2 disables the EGR function and any related check engine lights and DTCs.
It will work if you leave the EGR system installed (run with the EGR system) and it will also work if you install an EGR block kit. Works in conjunction with an EGR block.
No more leaks from the EGR system! Yes say goodbye to coolant leaks from the EGR!
DEF: Diesel Exhaust Fluid
This tuner will allow you to turn your urea injection system off completely, which will allow you to remove the tank and all related sensors. This is a great option for those that want to remove the extra weight from their vehicle or those that are having problems with the system.
Note: ULSD (Ultra-Low Sulfur Diesel) is not required if you have the Mini Maxx installed on your truck. You can now feel safe using high-sulfur diesel, which will make you happy if you live in an area where it is hard to find ultra-low diesel fuel.
Mini Maxx offers the flexibility of turning your truck into a more capable and economical vehicle.
Mini Maxx V2 FAQ
Is the bypass-cable option a complete Mini Maxx V2 package?
No. The option named 2018-2021 Dodge Ram Bypass Cable is the cable only. Choose a vehicle-specific tuner option when the Mini Maxx V2 unit, display and standard package accessories are required.
Does every vehicle receive identical functions?
No. Most listed tuner options use the same device hardware, but calibration support, gauges, SOTF and adjustments depend on the vehicle and PCM software. The 2018-2021 Ram tuner package also includes an extra bypass cable.
Will a Mini Maxx V2 work with a stock emissions-equipped road vehicle?
This listing is for the supplied emissions-removal calibration product, not an emissions-compliant stock-vehicle tune. Do not assume the unit is suitable for a stock road application because the engine appears in the vehicle list.
Does selecting a supported model year guarantee PCM compatibility?
No. PCM software identification and prior vehicle changes can affect support. Have SPELAB check the current PCM information and device configuration, particularly on 2018+ Ram applications, before ordering or programming.
Will the tuner physically remove the DPF or stop an EGR coolant leak?
No. A tuner does not remove mechanical components or seal a coolant leak. The Mini Maxx V2 is not a replacement for diagnosing a leaking cooler, damaged hose, loaded filter or other mechanical fault.
Will the Mini Maxx V2 prevent every warning light or trouble code?
No. The Mini Maxx V2 does not guarantee fault-free operation on every PCM or vehicle. DTC clearing removes a recorded code where supported but does not repair the underlying problem.
Are all advertised gauges available on every truck?
No. The available gauges depend on the vehicle and software support. Do not assume factory EGT, LML boost or other restricted channels are reliable simply because the device has a gauge screen.
Does every truck support Shift On The Fly?
No. The fitment chart distinguishes SOTF support by application, and PCM software can add restrictions. A supported tuner application does not automatically mean all power levels can be changed while driving.
Can the Mini Maxx V2 adjust tire size and speed limits on an LML?
Do not rely on those functions for an LML application. The linked V2 support information identifies application-specific adjustment limitations; confirm the exact function before purchase rather than treating the general feature list as universal.
Can I use the tuner on an LGH or dual-fuel-tank truck?
The current listing excludes LGH and dual-fuel-tank configurations. Do not infer support from a broad Duramax or Cab & Chassis label.
How should I resolve a software or update error?
Record the settings screen and complete error message, then contact SPELAB with the order and vehicle details. Use the V2-specific update resources only for a supported device; do not substitute V1 or unverified files.
Are known limitations guaranteed to be fixed by a future update?
No. Treat the functions and restrictions available for the current supported configuration as the purchase basis. A statement that a fix is being developed is not a guaranteed release date or promised capability.
Does the Mini Maxx V2 guarantee an extra 5 MPG or smoke-free operation?
No. MPG and smoke depend on vehicle condition, calibration, load and use. An individual fuel-economy report is not a guaranteed result or a substitute for checking injectors, airflow and other mechanical conditions.
Can I use high-sulfur diesel after installing the tuner?
The tuner does not override the manufacturer's fuel specification or applicable fuel requirements. Use the diesel required for the vehicle; do not treat a calibration change as approval to replace required ULSD with high-sulfur fuel.
Is a Mini Maxx V2 legal just because it is labeled off-road or race use?
No automatic exemption follows from an off-road or race label. Emissions-control disabling can violate U.S. requirements for EPA-certified vehicles; verify the applicable requirements rather than relying on the product label.
What should I send when asking about compatibility or support?
Send the vehicle year, model, engine, pickup/C&C configuration, fuel-tank arrangement, current PCM software information, device settings and any exact error message to SPELAB support. Include the selected option and order number where available.