ECU differences....

[madmike]

OK>> i have 2 spare ecu's.

1st says 000 RB2 and i think it is 8 bit model...

2nd says 000 RP7..

This ecu looks completely different to the first.

It seems to have a row of solder blanks that look like the shape of aftermarket chips but no base installed.. 16 Bit maybe?

So my question is..

Which ecu would be the better to use in my 90 rs

Would the speedlab chip i have still work in the 2nd( possible 16 bit) ecu if i install the carrier and cut jumper?

[madmike]

anyone?

[Guest]

Who knows?

The ECUs could have anything inside them

only way to find out is carefull trial

with boost gauge, wideband O2, and knock link

[Durty-Sanchez]

It probably wouldn't work.. 8bit chip -> 16bit bus, i'd be suprised if anything happened at all. The 16bit ECU's used this bizzare chip that you can't buy anymore, infact it was probably only ever made specifically for JECS and their ECUs. You can emulate it though, which is why most use a daughter board, but an 8bit chip in all likelihood wont work

[suubyduuby]

000 RB2 - Looks like the last 6 digits of the ECU model code.

Could be from a 89-93 Subary Legacy RS-R?

http://www.trademe.co.nz/Browse/Listing.aspx?id=94158344

[Joker]

pics?

[BC5RA]

The 16 bit computer uses a dual 8 bit chip eprom board.

This would be the best ECU to use.

An RSR ECU is nothing more than an RS ECU.

The only Higher performance ECU of the Gen 1 Legacy's was found in the RS RA.

[madmike]

Oh ok. Only trouble is if I use the 16bit ecu I won't be able to use the chip I have in the 8 bit at the moment.

The chip I currently use ups my. Boost to 14psi on the standard boost controller.

Don't like the idea of putting in a tap..