I took my 1.8 last month, was having a bit of a bumpy ride, thought new suspension more stiff, but after pass 3k mileage still quite bumpy ; got fish tail effect also , is it can claim from sc to do something about it?

Btw, got anyone hear the "tink tink" sound from absorber after long drive ?

Any sifu got install tweeter ? Will it void warranty if install?