| Mark writes: Sajeev, I've had my 2015 Focus ST for 15 months and 14,000 trouble-free miles so far, and I'm really enjoying the car. The car is still 100 percent stock, but I'll likely contact Torrie for a tune before long. As much as I like the car, I'm really alarmed to read about the […] The post Piston Slap: For a Cleaner EcoBoost, Install a Catch Can? appeared first on The Truth About Cars.
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