Quote:
Originally Posted by Whocares05050
I am not sure why so many here are anti-catch can or even feel it wont effect them. My twin turbo n54 motor BMW at only 28k miles were so nasty that it picked up 38 RWHP after blasting the valves. Yes, they were COATED at only 28k miles... stock with zero mods. DI is great unless you neglect it. Spend 140 and get a damn catch can.
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That’s because the early Bmw DI engines are a horrible design and all have buildup and failures. They were early to introduce DI before they even knew how to make it work. You know your design is junk when BMW has an actual part number for walnut shells
