1. change front grill and fix bodykits (since front and rear got sensors will this void warranty?not sure if they need remove those sensors from original body and do some rewiring)
-Depend on car manufacturer usually bodykits will not void warranty but render paint warranty to exclude the bodykits section
any experience on toyota cars?anyway i plan to get whole set of trd ones...how bout the sensors?need take out 1st then put back right?no need cut de meh?2. fix front strut, rear antiroll and torsion bars
-Should not void any warranty unless involve cutting body structure and parts (Usually this parts is plug and play)
3. change headlamp, fog lamp and cabin bulbs to led type
-Headlamp change to HID (No issue with car manufacturer but got issue with police/jpj)
-Foglamp no issue
- LED cabin light no issue as this item is plug and play
not planning to change to hid...cost a bomb lol..i onli wan change normal bulb type to led onli...or this cannot be done?must change whole headlamp?4. fix door scuff/sill plates (need do wiring)
-No issue (if got problem bring back to acc. shop instead of your manufacturer)
5. change door handles to illuminated type (need do wiring)
-No issue (if got problem bring back to acc. shop instead of your manufacturer)
6. change air/oil filter to performance type
-for Drop in usually they close 1 eye but if open POD (it is no no)
- oil filter - if warranty you bring back to authorised service in time should not be issue
for the air filter those simota, knn or utr all got drop in type right?open pod u mean take out existing filter and replace my own?7. fix fog lamp cover with built-in led drl (need do wiring)
-No issue (if got problem bring back to acc. shop instead of your manufacturer)
8. fix rear bumper smoked led reflector with brake light (need do wiring)
-No issue (if got problem bring back to acc. shop instead of your manufacturer)
Added on March 7, 2012, 11:08 amnote: if by cutting wiring affect other thing make sure you bring back to acc. shop to get it fixed before send back to authorised service...
None of which you mention will void the warranty for the powertrain. If you car have separate warranties for things such as lights, suspensions, chassis etc, some of those might be void eg. Strut bars may void suspension warranty and so on.