[s-cars] Chipped ECU swap

[Aaron Ryba]

S-heads
I'm thinking about trading my stock ECU for another one that has an MRC stage 2 chip and 3 bar VMAP. Is there any reason I should worry about trading my functioning stock ECU with that of the chipped one? My car is a 95 S6. I don't know of any changes to the ECU over the years from the earlier S4 and right now I don't know what year the chipped ECU is from.
Is the ECU swap a fairly simple task? Any complications invovled with it?
Any BTDT is appreciated.
Thanks,
Aaron Ryba