Whats the most work I can put into the Tc without voiding any warranty? and what manufacture if theres any thats approved by toyota to use? I searched regarding this and i couldnt find anything sorry if im posting again

 

You can do anything you want... but your warranty is not automatically voided by anything.

Here's the deal... say you put an intake on your car. Your warranty is still fine. Then say that you starting having trouble with your engine... you take it in and they discover that it's your intake that caused the problem. They can deny your warranty repair claim and make your pay for the repairs IF they can prove that your non-OEM intake caused the problem.

Even if that's the case, your warranty is still fine after that. Basically they can deny any warranty claim if they prove an aftermarket part directly contributed to the problem.

 

technically, any non OEM part that you add to your scion CAN void your warranty, it just has to be proven that your non OEM part caused a failure.

 

i thought warranties arnt voided, its just that the repairs wont be cost free

 

lets say all i use in my car is stuff manufactured by TRD like intake or exhaust then they cant say anything right? and how good is the TRD products anyways, do they compare to lets say JDM or GReddy?