Diagnosis/Check Engine Light/Service Engine Soon Lights

We believe an area that really sets us apart from our competitors is our ability to accurately and efficiently diagnose vehicle faults and hone in on the correct course of action to remedy the problem.

Service and Maintence

Almost any shop can replace a bad part once they know what needs to be done, but the process of going from a warning light on the dash to a plan of action is not that simple.

Modern vehicles are extremely complicated, the days of being able to troubleshoot your car at home with basic equipment are disappearing. Each make we services requires highly specialized software to effectively troubleshoot. For BMW’s we utilize a combination of tools to efficiently diagnose your vehicle. We use ISTA for fault code reading and troubleshooting and ISTA-P for programming. We also utilize Snap On Solus Edge (Darryl?) when appropriate for simpler tasks and datalogging. For Porsche we utilize PIWIS-II, Durametric, and Snap On XXX?

BMW/Porsche Diagnostics, Service & Repair

Service Areas Include: Irvine, Laguna Hills, Lake Forest, Mission Viejo, Newport Beach, Costa Mesa, Ladera Ranch

From a routine oil change to an entire engine overhaul, Lang Racing Development is prepared to handle any job. Lang Racing Development delivers the highest quality of workmanship at prices significantly below the Dealer. We specialize in BMW and Porsche but we also perform basic maintenance on all makes of cars import and domestic. We can utilize our expertise in engine tuning and maintenance, suspension development, and custom fabrication to make your street car run like you’ve always dreamed.


I like the way they serve customers. Proactive but not pushy. I went there for the brake services and the oil change.

Scott - Google

Andrew, Jonathan and all of the staff at Lang Racing Development have restored my faith in finding an honest auto repair shop.

Afshin - Yelp

After years of looking for a place to take care of my car, I *finally* found Lang Racing. Simply the best; straight forward service, great communication, great staff, and competent. My first choice for future service or repairs.

Rob - Facebook

We warranty all service work with a 2-year / 24,000 mile warranty!


Our Philosophy

While many repair and service shops in Orange County pay their employees on a flat rate basis our employees are well paid on salary. That means that when we work on your car we have no reason to rush through the job to make extra money. Our technicians are Factory trained and have years of dealership experience. We pride ourselves on our quality work and to spending the extra time that is necessary to ensure your car is fixed right.

We specialize in BMW and Porsche. We take on jobs that even the dealerships do not have the expertise to handle. We utilize the same diagnostic scanner and programming software that is utilized at the dealer. While many other shops use less expensive software we feel that having full dealership capability is a must to fully service the these high end brands.