Mine was installed at BMWHK (TW), so the warranty will not be void
The downside was paying $4,800.
For your reference, the outside garage charges around $1-2,000 max!
So, if you are not running to China, like me, you probably don't worry the suspension warranty, as there are many bros who moded already!
If you like some sprint drive occasionally, trust me swap that OE super-lux spring to some aftermarket is a must