Can I use FORscan once tuned?

Yes. FORScan changes and custom tuning operate independently, so changes made in one generally do not affect the other.

FORScan modifications made before tuning will remain in place, and flashing a custom tune does not overwrite or undo those changes. Likewise, making FORScan changes after tuning does not require a re-tune.

In rare cases, FORScan may report an OSID mismatch when connecting to a tuned vehicle for the first time. If this occurs, please review the troubleshooting tips provided on this page.

After completing those steps, FORScan should connect normally whether the vehicle is running a stock calibration or a custom tune.