Quote:
Originally Posted by jmciver
I would not take that risk if I were you. BMW is much more sensitive to engine tuning modifications nowadays, either DME tuning or "piggy backs" like this. Even though the X7 is not considered a popular vehicle to tune, compared to a 3-series. While there are no guarantees, don't make it easy for BMW to flag your vehicle and void your warranty on a $100k vehicle. Just my $.02...
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Good call. I pulled it out and brought it in. Service said they think it may just be air bubbles, and they’re convinced there are no coolant leaks. They flushed the system and carefully refilled. We’ll see...