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Defi Smart Adapter w/ OBD2 Set ( Part Number:DEF1 DF14502)

Defi Smart Adapter w/ OBD2 Set - Universal

MODEL # DEF1 DF14502
Manufacturer Part # DF14502


MSRP: $275.00

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RallySport Direct is proud to supply the car enthusiast with a large selection of Defi Gauges and gauge components. Defi Gauges have been the number one choice for aftermarket gauges that are utilized by those who participate in all varieties of motorsports that include drifting, drag racing, time attack, and circuit racing. They are known best for their quick operation, and both fit and finish. Choose the right gauge or gauge component that will suit your application. 

On this page, you are looking at the Defi SMART Adapter that comes with the OBD2 set. The intended purpose of the SMART Adapter is to be able to transfer vehicle data to your iOS or Android mobile device once you have installed the dedicated application. Once installed, you can view the data in meters or graphs which can be displayed on your screen.

This works by connecting the smart adapter into the Defi Advance Unit (sold separately), then you can have a wireless connection to your smartphone, or tablet. 



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Brand: Defi
QTY: 1
Connects To: Defi Advance Control Unit or Vehicle

Mfgr. Warranty: 1 Year
Condition: New Product
Return Policy:

RallySport Guarantee - 30 Days

Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.

RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.

The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.


This product has no user uploaded media. You can upload your photo or video of your install by posting a review. Reviews:

  • Q: Work for USDM Subaru 2004 STI  A.B. 2 years ago


    Hello, I am interested in this product. Will it work on a 2004 Subaru STI USDM?

    • A: This will plug into your 2004 STi, however, full function does depend on the device that you plan on using. We would be happy to look into this further. Please give us a call at 1-888-457-2559.

      Chris W. 2 years ago
  • Q: Defi Smart Adapter  Tony 2 years ago


    Are you aware if this will work with a 98-01 GM computer? I already have the Defi controller, oil temp gauge, and water temp. But I would also like to monitor speed, rpm, and other parameters from the GM computer directly. thank you

    • A: Unfortunately Defi has not tested any GM models within the years mentioned. From the details mentioned by Defi Japan, the Defi Smart Adapter with OBD2 Set seems to be compatible with 06+ vehicles. Older vehicles may not have software compatibility.

      Josh P. 2 years ago
    • A: The the Defi controller will not transmit data such as rpm, and mph. Will it?

      Tony 2 years ago
  • Q: easy install?  subiekid916 3 years ago


    Does this unit just plug straight into the obd2 wiring harness and then a power supply? Will any aftermarket sensors be needed or does this run solely off what stock sensors?

    • A: This plugs directly into the OBD2 port. This uses all OEM sensors although depending on the year/model vehicle some may have less sensors and options than others.

      Nick S. 3 years ago
Universal Product
This item is non application specific.
Please verify compatibility before purchase. May require some modification for proper installation.