Hi there,

I have a W6 ecu and a Z4 ecu for my 1995 impreza turbo import but don't know what the difference is, if any, and which would be the best fitted to my car, any help or info would be great.

Thanks

Dan.

 

Boost Targets & Fuel-Cut Limits
WRX/STi Saloon ECU's 2C, U8, W6, W9 - As above, 11.47psi held to redline. Fuel-cut 14.57psi
WRX (1995/96) ECU Z4 - 12.71psi, dropping to 11.78psi @ 6600rpm. Fuel-cut 15.65psi

1995 wrx has a z4 as standard

 

z4 mate its 260ps apose to the 240ps w6. its a cleaner map also .it was fitted to the post 95 wrx's im lead to believe