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I wonder if it's just kind of snake oil, or if driving with high RPM for a while from time to time could prevent/reduce that problem.
- Engine warm
- drive at highway speed, in a lower gear but higher RPM (above 5'000 RPM) for a few minutes.
So the income valve area get's a higher operating temp that could reduce/burn the junk.
Any idea?
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335i F31 RWD in SB (2013) || Powertrain: Active Autowerke Flash Tune Stage 1 | AA Charge Pipe | AA FMIC | GFB DV+ | xHD Trans-Flash | Quaife LSD | Cyba 3.5" Carbon tips || Chassis: 20" 405M | Wiechers Strut Bar | Rear M-Diffusor || Brakes: 18" M-Perf Brake orange 370/345 | EBC YellowStuff pads all around
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