Curious if you went with the ECS kit and how long it took to install?

I'm getting a Self Leveling Suspension Inactive warning after a couple weeks of freezing temps / installing brand new front bags and think my relay or compressor have gone bust (30A fuse was fine).

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2008 E90 M3 VT2-625
2013 ZN6 BRZ S/C
2005 X53 X5 4.8is