In this episode of Saturday Mechanic, Ben Wojdyla shows how to upgrade the powertrain control module (PCM) on a BMW.
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In this episode, Popular Mechanics’ Associate Auto Editor Ben Wojdyla:
* Accesses the PCM
* Bypasses the factory turbo controller
Who says you can’t work on your own car anymore? Follow Popular Mechanics associate auto editor Ben Wojdyla as he leads viewers, step by step, through repairs, upgrades, and troubleshooting tips. Got car questions? Email Ben, and he may answer them on the show.
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