I have had the EAT chip in my 95 525i for at least 6 years. Works great, better low and mid range power. Egone seems smooth. Must use higher octane here in the US. I average about 23 mpg with mixed driving. I have woindered about the WAR chip. However I do not really want to play with different tunes. I just wanted a better running car.
1995 525i auto, 1/95 build, EAT chip, abt 236K miles, , HID, Lumbar, Oxford Green/Parchment, rebuilt trany @ 211K