How should an unapproved add-on part be entered into the BAR 97 EIS?

Entering an unapproved add-on part into the BAR 97 EIS through the "Modified" option is appropriate because this designation indicates that the vehicle's original configuration has been altered. This reflects the reality that such parts were not originally intended for use on the vehicle and can significantly impact emissions performance and compliance with regulatory standards.

By marking the part as "Modified," the inspector acknowledges that there has been a change from the manufacturer's specifications, which may have implications for emissions testing and compliance. It's important to document these modifications correctly to ensure accurate records, as they can affect the assessment of the vehicle's emissions system and its overall emissions performance.

In contrast, labeling a part as "Repaired," "Missing," or "Installed" may not accurately convey the essence of an unapproved add-on, leading to potential misunderstandings regarding the vehicle's emissions configuration.