Can any one help ?
I have a 1996 WRX Jap Import Wagon 220bhp only mod Roger Clark centre cat removed & S.S back box.
Just bought a Prova ECU mod, it is fitted to a ECU marked IC with piggy back board with four chips on top, two of the chips are marked PV220-3 is this ECU safe to fit ?

 

mapped on jap fuel usually.

 

Thanks, If I run the WRX on Shell 99ron with that be O.K. & safe to use?

 

not with out having it checked

 

a prova ecu is very unlikely to have been mapped on a td04 mate
much more likely to be a td05 with lots of timing advance...
even with NF I still get occasional det on my 18g car.

dont risk it.

 

good point re-td04

you are running an 18g on 16g map! what boost?

 

Thanks for the info.
I bought the Prova ECU off ebay and the guy said it was off a 1996 Wagon.
said it was maped for a TD04 running 13.5psi boost.
I removed the Prova sticker and it has CI on the original Subaru sticker on top.
This ECU I think was on a 1993 WRX ??
I had in the past a 1995 WRX with TD05 that went realy well
The wagon is quick but nothing like the old WRX I had with the TD05.
I have a TD05 & Z4 ECU which I can fit but not sure if I need to do any more mods.
If the Prova runs the TD04 at 250bhp ish I would be happy - Just do not want to harm the engine

 

td05 and z4 imho