here are the mods which should not affect warranty (probably because they won't know they're there):

any mod which can be relatively easy and quickly swapped back with the stock part such as intake.

any hidden mod like chip reflash, cam, pistons

anything else?

 

Moving to the newbie forum. Try running a search for "warranty" and "SEMA" or just look for yourself at http://www.sema.org

 

no mods can straight up void your whole warrenty

search for magnuson-moss act

 

thanks! i had no idea. these dealers shouldn't lie to the consumers.

http://www.svcmotorsports.com/warrenty_info.htm