Do you need to chip ps2 ?

There is a trick - it's called the "Knife Trick". It involves ripping off the tray flap; shoving a knife into the works at the right moment to pull the Eject lever; swapping the disk, etc.

That not only voids the warranty but shags the PS2 as well.

There are thousands on this forum who have chipped their PS2. Do you want to play backups or import originals?