Wanted to add an update.
65/35 hwy/city I got about 22.4-23 (just added today). GRANTED I just got my JB4 installed + catless DP + axle back installed so I've been a bit boost happy as well (trying my best to test out the JB4).
When I went on a 34 mile highway commute right after fueling, I averaged 28.2 mpg and it was still rising when I got there. Probably could have gotten it to 30 with some babying.
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2021 M2 Comp | STEK Stealth Wrapped | PSM V2 Trunk Spoiler
2022 X3 M Comp | (SOLD)
2016 M3 | AWE Switchpath Diamond Black 102mm (SOLD)
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