R32 Or R33 Ecu? Help Me Identify Which It Is Pls!

[MarkE]

Hi guys,

I bought a loom + ECU which was from an R32 but was on an RB25DET.

I was told this was an R32 RB20DET ECU and loom, which is what I need for my RB25DE head on my RB30E bottom end, for my RB30DET.

I am somewhat worried that it is in fact an R33 RB25DET loom, and ECU, and thus is not chippable, and will not be appropriate for the sensors on the RB25DE head, and the injectors, etc.

The serial number is: 23710-21U01

Only hit I could find on that was this guys post who says it is an RB25DET ECU (R33) http://64.233.187.104/search?q=cache:FmHd5...710-21U01&hl=en

I have taken some photos:

I was originally posting this to ask which one was the consult port, but now Im concerned this isnt an R32 ECU at all!!

[MarkE]

http://www.grid.co.jp/en/prod/prod93.htm

It seems this is a chipped R33 ECU, that has had a daughterboard installed, and a reprogrammed R33 chip.

This will not be compatible with the sensors on my R32 RB25DE now will it.

Hmm. Anyone interested in swapping an R32 ECU and loom for an R33 ECU and loom? The R33 loom would be easier if you are planning on using a PowerFC since the R33 PowerFC is substantially cheaper.

[predator]

Looks definitely R33.. no standard replaceable chip there that I can see.

The ERPOM on the R32 are lot smaller and skinnier..

Actually.. I just pulled out R33 ECU I had lying around.. same part number .. Its a series1 ECU for R33.. sorry bud

[RB30-POWER]

If its R33 it must be Series 1 ecu, because my series 2 unit has different part no, and a little different internally.

[BHDave]

That ecu wont fit an r33, the brackets are wrong. The brackets are for an r32.

But the internals dont match what i found inside my r32 ecu either and the part number is slightly different. could it be an rb25de ecu?

got picks of the loom? Thats pretty easy to confirm r32 or 33 from the under dash plugs.

Edited September 5, 2005 by BHDave

[MarkE]

http://www.grid.co.jp/en/prod/prod93.htm

Right here, this Jap site is selling chips for them. Says for R33 ...

[MarkE]

http://64.233.187.104/search?q=cache:FmHd5...710-21U01&hl=en

He seems to think RB25DET as well.

Any ideas guys?

[MarkE]

The internals are different because it has had a socket installed to allow EPROMS afaik.

[predator]

its interesting as it has the top chip socketed.. whereas most of the standard R33 ones don't..

Maybe it is possible to chip them, its just quite expensive?? (that programmer on g-grid site was up around $1000).

Can you see what looks like home solder jobs around the top socket there at all?

[MarkE]

Not that I can see. It looks well done.

From what I understand there is nothing inherently different about chipping an R33 ECU compared to an R32 ECU, other than that you need to do a little bit of soldering on the R33 ECU, and that the chips suitable for the R33 are write-once only.