Suitable for most American, European, Japanese, For G-M benzine vehicles The product is our most powerful Dynamic Soft-Flasher. Operating at 20MHz with plenty of Flash Memory, the offers extended compatibility and faster patching for higher, more consistent gains The product is a vehicle specific, custom programmed 20MHz Microcontroller. It utilizes its high speed serial input/output to communicate directly with the ECU through the OBD-II port 1.V-P12 is a truly play-ready,VP-12 is simple to install, plug and play, without any hardware modification and modification, when no longer in use, you can unplug and restore the your car at any time. 2.Varm reminder:In order to ensure the effect, please install accor ding to the order of the tutorial,Hot car - turn off - in sert the device - press the "Reset"- and so on 2 -5 minutes after the completion, if not clear, please contact customer service. 3.LED indicator,The VP12 is an intelligent plug-in computer, it will collect vehicle data, generate special caspecific MAP, the whole process without manual intervention,LED indicator changes.representing the different working states of the plug-in Note: If you are not professional for technology, please don't buy this product Installation guide not included, we strongly recommend you seek professional installation. Please check as much as possible to make sure the item is what you need. Tips: The product may be updated constantly ,Due To Different Batches, The Actual Product May Have Slight Differences Or Color Differences, Which Does Not Affect Use Colour:Photo Color Material:plastic Package Contents: 1 x VP12 OBD Dynamic Soft-Flash Chip Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.