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Small black OBD-II dongle with ScanTool branding

ScanTool

ScanTool Carbyte AFM/DFM & Start/Stop Disabler Scan Tool - Black

SKU CH-70SX-ND2Y6

Disables AFM/DFM and Auto Start/Stop on compatible GM vehicles while adding full OBD-II scan capability via smartphone

  • Product colorBlack
  • Keeps engine on all cylinders full-time via AFM/DFM disable
  • Eliminates start/stop to prevent starter and battery wear
  • Becomes full diagnostic scan tool when paired with smartphone
  • Works stand-alone plug-and-play without any app required
  • Compatible with GM SUVs from 2021 and trucks from 2022

AFM/DFM and Start/Stop Disabler

The ScanTool Carbyte plugs into the OBDII port to disable Active Fuel Management and Dynamic Fuel Management, keeping a V8 engine running on all cylinders at all times. It also turns off the automatic start/stop system so the engine stays running during every stop. No smartphone app is required for these two functions, and the device is ready to use immediately after insertion.

GM owners wanting permanent V8 operation

Drivers of compatible General Motors SUVs from 2021 onward and trucks from 2022 onward who prefer full-time eight-cylinder performance and dislike the start/stop feature will benefit. Buyers who need to retain factory fuel-management behaviour or who own vehicles outside the listed GM model years should look at other solutions.

OBDII scan tool via smartphone app

When paired with the OBDLink app on an iPhone, iPad or Android device, the Carbyte becomes a full-featured diagnostic scan tool. It provides real-time gauges, graphs, emissions readiness tests and the ability to read and clear standard OBD-II engine codes. SEMA certified EPA emissions certificate SC-CRB01-0057 is included.

How it compares

Measured against everything we stock in Car Audio Accessories & Wiring, at today’s prices. Recalculated every night.

Price $108.99
Pricier than about 84% of the 2,768 comparable items (median $21.99).

Specifications

Product
Product colorBlack

Questions about this item

Do I need a smartphone to use the AFM/DFM and Start/Stop disabler functions?

No, the device works as a stand-alone plug-and-play unit for those features; the smartphone app is optional for on-the-fly control.

Will this tool function on a 2021 GM SUV or a 2022 GM truck that I already own?

Yes, Carbyte is compatible with a wide variety of GM vehicles, including 2021+ SUVs and 2022+ trucks.

How can I verify the device is communicating correctly after I plug it into the OBDII port?

Pair it with the OBDLink app on iOS or Android to view real-time gauges, run emissions readiness tests, and read or clear standard OBD-II codes.

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