Does The Superchips Flashcal Calibrator For 2021 Ram 1500 Laramie Require any Additional Cables?
Updated 02/17/2026 | Published 06/24/2024
Question:
Will I need a gateway bypass cable to use this item SU54FR on my 2021 ram 1500 Laramie 4X4 33.21 gear. I upgraded my tires to 35/12.5R20 now my speedometer is off.
asked by: Rick L
0
Expert Reply:
You will only need the cables included with the Superchips Flashcal Calibrator # SU54FR to make adjustments for your tire size. First you will use the USB cable to connect to your computer to ensure it has the most up to date programming. Then you will plug into the OBD2 connector with the provided cable to access your Ram's settings.
expert reply by:
Bud M
0
Product Page this Question was Asked From
Superchips Flashcal Calibrator for Dodge/Ram Truck
- Performance Chip
- Calibrators
- Color Screen
- No - Not California Approved
- Flashcal
- Superchips
more information >
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Jesse M.
2/17/2026
Hey, how did things go after using the Superchips Flashcal Calibrator on your Ram? Did it get your speedometer reading correctly with the 35-inch tires? Your update could make it easier for the next person doing a similar upgrade.