Let's see: Ori layer = ECT, New layer on top = CW.
Bubble appear soon after, or tint gets "rusted", or tint start to fade (its a 5 yrs warranty wor)... what you do? Go CW or ECT?? Even if both agree to warranty their own film, each will ask you to remove the tint for claim... and in doing so, BOTH film will come out. Then, only one will replace it coz you have only one film after tear out... you dont expect CW to help you take out ECT, or vice versa do u??
End up, only one tint film will be replaced FOC, and you have to re-do the other one.
Worse case, both film company says its not their fault, and you end up running around for nothing, and have to re-do both or use a new film.
Both above options will cause you more and headache in trying to convince the film companies to honor their warranty...
My advice, esp if you wanna darken your car.... remove the ori tint and go for one darker film.... you still get warranty but no JPJ saman settlement la...
. You are right but oh well I've already did it. So lets hope that nothing goes wrong with it