Ive just fitted a Z4 ecu to my93 WRX and it makes a hell of a difference.

what i want to know is do i still need to use octane booster or can i just use optimax now with the Z4?

And does anybody know when the scoobyecu is going to be available?

Thanks

 

You still need octane booster to be safe as it's still
mapped for 100ron.

WW

 

i agree as there is jap import at a garage near me said individual was told only put in a tank of super once a month run on normal ul now piston melted
very expensive
always use octane booster