European Vehicles

3 answers in this topic · all topics

• How do I complete a drive cycle on a BMW?Drive a mix of city and highway for 50-100 miles.
• Why do European cars fail smog more often?The main reason is tighter design tolerances.
• Will aftermarket ECU tune fail my BMW smog?Yes — under the post-July 2021 rule, an aftermarket ECU tune fails the smog inspection.