Not at all. Think about it...if they did don't you think all the manufacturers would be using it. The only thing you get from them is an empty wallet. Search this forum and you will spend countless hours reading how they are worthless.
Retired my 94 YJ 4cyl 5spd @ 200K
Now in a 04 TJ 4cyl 5spd CV @120K+
Both as a commuter vehicle in NW, NJ
April 2012.downsized and now a 99er.