| 1. | Log into your account at www.hptuners.com. |
| 2. | If you haven't already done so, make sure to register your interface device. |
| 3. | Once registered, the module will appear in your My Devices list. Select My Devices on the My Account page. |
| 4. | Select Add Credits. |
| 5. | Select the type and quantity of credits to add to your shopping cart. |
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