Frankly speaking i didn't wait till end of warranty because i had the taste of this EPS in my previous Cultus. EPS is terrific as compared to oil based power steering that i had in one of my VXL Cultus.
EPS provide assist to steering box/wheels for easy turning when is in low speed and reduce its assist in high speed, thereby reducing the chances of accidents due to sudden turning of steering in high speed. A process unit also get fitted under the steering, whereas khiradi cut the main steering bar and insert the EPS in between, right in front of your knee. Electrician role is important to properly connect the processor unit so that i works with its full functionality. Cost is between 8 to 10. But do spend time to find a very clean piece of kabli steering. I got one which was just like new. Kabli parts seller will try to cheat you by saying that the older looking steering is asli kabli but insist on the one without any rust etc.