whats are these out of

n340 18 881


and this


n318 18 881d

thanks

 

I beleive those are S4 TII numbers. Not 100% sure but i'll bump you up here.


Santiago

 

I don't think they are ECU's, maybe body computers...

 

they are 100% engine ecu's

 

lol, well i guess that cancels that out :P

 

Euro and Japanese turbo RX-7 ECUs

 

again, i would have never known mark :P

 

are they interchange able and why also which is which

 

Is there anything you don't know?

 

n340 is the s4.5 ecu, its an s4 with the electric metering pump or an s5 with the mechanical pump, i forget which

 

Here are a couple more from our friend Ted:

Non-turbo ECU's
Year/Model Part number
'84 - '85 GSL-SE N304
'86 - '87.5 All N326
87.5- 88 N327
'88 All, except convertible N327
'88 Convertible N338
'89+ California N350
'89+ Federal (non-California) N351
'89+ California, Convertible N352
'89+ Federal (non-California), Convertible N353

Turbo ECU's
Year/Model Part number
'86 Turbo (Japan) N318
'87 Turbo (USA) N332
'88 Turbo (USA) N333
'88 Turbo, Japan/Euro N344
'89 Turbo N370
'89 Turbo, Japan/Euro N380

 

STILL NO N340

 

N340 is the Turbo in Japan

 

n319 is the 87 jdm ecu

 

While in the topic of ECU's, What is the difference between a N370 and N374?

 

I'm in the same boat... Only mine's a N341!!! I've got a '87 Turbo Convertible from Japan I believe. Looks to be an S4...

N318 ECU's are plentiful in Australia so possibly just a standard Aus Spec S4 Turbo Coupe? There were a couple of different things with Aus spec models... Can't remember them though!

 

S4 or S5, you need to just worry about the first two numbers...

N340 would swap with an N341 and an N344 - all N34x
N318 would swap with an N319 - all N31x


-Ted

 

318 mostly came with the low impedence rx7s early S4,

 

Fuel injector impedence doesn't bother the ECU.
The resistor pack is all upstream of that.


-Ted

 

Okey sorry I ment by saying low impedence. That it was the early T2's

hence being low impedence. But your right the impedence doesnt go into account in the ecu.

 

Mine is N380

 

http://fc3spro.com/TECH/FAQ/ecutype.html

N380 = 1989 FC3S turbo, Euro / Japan


-Ted

 

So, ReTed......I've been holding out for a N333 for a 88 10AE TII and could have used a N332 according to your "first two numbers" post. Missed some good deals because I didn't have this info and didn't know enough to ask. Is there anything else that I need to know if I use a N332 instead of a N333? I putting a Rtek 1.7 chip in the "new" ECU and then swap into the Rex. Thanks.

 

I believe the first Cabriolet model was officially released in 1988?
I used to have a chart, but that got lost.
Anyone with a HyperRev or RX-7 Magazine for the model chart in the back?


I don't think the FC3S was sold new in Aussie?
I think they are all Japan imports?
Therefore, all those models and ECU's are all Japan-spec units...


-Ted

 

Yes, an N332 or even an N338 from a 1988 vert would've worked.

I think the N332 ROM versus the N333 ROM is different - try contact the RTEK guys for confirmation.
I know we were having problems swapping modded EPROMs from N333 to N332 - it just didn't work - years ago.


-Ted