prova ecu id

[WRXONP]

so my cars a 1993 wrx and I pulled ecu to have a look and it has a prova sticker like this

so I opened it to have a look as I was expecting a eprom chip because as far as I know this is the only way to tune these ecus

and to my confusion there is no eprom as u can see so I pulled the prova sticker off for curiosity to see what ecu numbers are and I have this

and to further add to.my confusion the numbers on case don't match numbers on the board

so I did a quick Google can't find anything about the numbers

because shouldnt the numbers on the ecu socket on the blue sticker match the numbers on the case on the sticker ?

case shows 000 RJ8

board shows 000 RH8

So my question is what is the ecu I actually have ? ver 1? ver 2? wrx? sti? bc5?

and since there is no eprom does that instantly rule out that it is a prova ecu ?

Cheers

[Guest]

Kamineko where are you?

Edited December 31, 2014 by evowrx

[kamineko]

oh hai,

my best guess is the F84GXC14 firmware is BC/BF legacy

the prova'd W6 cover is very likely the original that came with your '93 WRX

looks like someone swapped the board and kept the prova tune. sorry 'bout that.

on the other hand, a 4plug wrx ecu might net you some better power if you can find one. manual ecus that will work well for you are U8 2C W6 W9 U8 Z4 or sti SA SB SC 6K 7K. there are plenty of other 4plug auto/wagon ecus as well but they are slightly detuned

[WRXONP]

Why thank u sir ! exactly what I wanted to know .

feel gutted now but it does feel really weak in comparison to other wrxs I've had

that thread with all the ecu numbers / injectors / afm etc is gone i csnt find it ?

[kamineko]

yeah i need to reformat my posts to suit this forum. some permission issues have been sorted and i should have time to re-post the tech stuff plus maybe some shiny new info in the next month

[rtstk1]

I have a z4 ecu for sale bro lol