I am wanting to upgrade my ecu (to a mapable 1)i have a Z4 in my 95WRX any1 know the difference from a Z4 to any others and are the Mines ecu any good.

 

z4 ecus aren't remappable without the addition of the ESL daughterboard (Enduring Solutions Limited) or you will need to go for Power Fc ,Simtek which replace the whole ecu.
Mines ecus are normally mapped very aggresively (fuelling and boost maps) and ,as far as i know, no one in this country can read the info on them so have to be sent back to Japan for alteration

 

Thank You i am going to look at the daughterboard route.