Support

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For bug reports, feature requests, or general questions — email us directly. We read every message.

chip_e@mac.com

Frequently Asked Questions

What OBD-II adapter does JPI support?

JPI is designed and tested with the OBDLink MX+ adapter (~$100, sold separately). Other Bluetooth OBD-II adapters are not currently supported.

Does JPI write to my ECU?

No. JPI is read-only by design. It reads standard and enhanced OBD-II data but never writes to your vehicle's ECU. Your calibration is safe.

Is there a free version?

Yes. The free version includes basic OBD-II gauges and DTC reading. Upgrade to Pro for AI-powered insights, Tuner Briefing PDFs, and more.

Does JPI require an internet connection?

No. All AI processing runs entirely on your iPhone. JPI works at the track, in the paddock, or anywhere — no cell signal needed.

What cars does JPI support?

JPI works with any OBD-II vehicle (1996+) for standard telemetry. Enhanced platform support — with deeper PID access, platform-specific intelligence, and VVT/cam monitoring — is available for the C7 Corvette today, with more platforms coming.