Differences between Auto and Manual ECUS and Looms

[chriswills]

Hi all, i have an elgrand which i am hoping to put some 350 bits on, one of which is the ecu, does anyone know the difference between the manual and auto ecu?

 

I assume the loom is different too, my elgrand is auto, im hoping to get the 350 ecu fitted along with inlet manifold, im told the cam timing solenoid is different and the way the cams are adjusted is different too but the solenoid looks very similar and the plugs are the same.

 

Any one in wiltshire able to let me loook over their 350 for some guidance.? thanks

[chriswills]

Also, are the ecus able to be swapped from car to car, not manual to auto but an ecu from one manual straight into another without any issues? are transponders and keys needed too?

[Jetpilot]

I think the keys and ecus are coded for the NATS, nissan anti theft system. Nissan can programme them but not sure on the Elgrand key, having said that, I think tuners can switch the system off.

 

Will the Elgrand run right as its map is obviously 350z specific, cam timing, fuelling, ignition etc?

 

Are you near any of the tuners, Horsham or Abbey, may be worth a trip to them with a 350z ecu.

Edited November 6, 2016 by Jetpilot

[chriswills]

from what i can see/read up, the key is coded to the bcm so im guessing in theory that shouldnt matter, as the key will still be with the corrct bcm. could be totally wrong there though, what i do know is that the Elgrand isnt readable with a normal OBD scan tool and im told it uses a specific protocol for that car, im sure there has to be a way of running the 350 ecu and loom though.

[Jetpilot]

So just to confirm, tuners say they can read the ecu?

 

Pretty sure you will find a 350z will not start without the correctly coded ecu to key.

[chriswills]

thats what i thought too, the Elgrand cant be read by anyone other than Abbey in the uk at the moment an they can only map it if they have the right rom, and thats very unlikely as they only have one rom, a normal odb flash wont work as the Elgrand uses a very odd protocol.

 

I found a service bulletin saying that the nats system didnt need to be re initialized if the ecu was changed on 2003 on 350z and murano, it didnt mention the elgrand, but does say that the key is coded to the bcm and not the ecm. i dont know myself just what im reading, i did get told that the ecu could be swapped between cars with just an ecu reset too. is this not right?

[Jetpilot]

I am not 100% but dont think so.

 

Do the plugs match on the ecus?

[chriswills]

yeah but then pretty much all nissan ecu plugs match, a 1.5 almera will use the same plugs as a fuga lol, i cant find the pinout for an elgrand ecu, i have a 350 ecu striped at the moment, waiting for my elgrand to come back later today so i can lug it in and see what happens, the ecu i have is from a manual, which makes me think it wont work with the auto box if at all, i was told the vvt on the elgrand works differently to the 350 one but after a quick search they seem to use very similar componants, i did have a quick chat one of the tuners and they said that it would prob be easiest to swap loom and ecu and run it on the zed ecu, there is very minimal stuff that is canbus on the early elgrand and 350. should be an easy enough swap. but i need the looms to start with i think. i dont want to keep buying ecus etc if there is no need and it can be sorted using a manual ecu etc.

[Jetpilot]

So whats the ultimate goal, a mappable ecu or running a 350z engine?

[chriswills]

im hoping next year to go forced induction, whether that is twin turbo or hks supercharger im not sure yet, it would be nice to just release a few more ponies with the 350 inlet/ exhaust and ecu. would also gain obd diagnostics and easy remaps, my other thought was stand alone like haltech but that is a large cost that t the moment i want to avoid.

[Jetpilot]

Sounds good, I know there are a few fi'd elgrands around on the web, what are they using? Have you tried contacting Nissan with regards to a wiring diagram, apologies if I am being obvious.

[chriswills]

Yeah i have tried that but nissan uk have no interest as they dont carry the right diagrams, nissan jp wont send any across for me. there are only a handfull of japanese elgrand running forced induction most use the elgrand ecu but in japan its easyily upgradebale. there is a chap in oz who has transplated the whole 350 engine and manual box into one but hes not really up for sharing info.

[Jetpilot]

Good luck dude, my local nissan are pretty good, if I get time will ask them.

[Mark@Abbey m/s]

Elgrand motor has lower compression/different cams as well as different headers/manifolds and totally different intake system.

 

The cam (phase) sensors are in a different position to a 350Z so the crank/cam trigger pattern will be different.

 

I seem to think that the connector for the ECu on a ElGrand is different to the 350Z as well would need to look through some paperwork to confirm.

 

We could easily dump you ECU ,UpRev will de-code the ECU and then we could supply Osiris cable/license and you can tune away on your Elgrand ECu without the hassle of trying to swop ECU's

Edited November 7, 2016 by Mark@Abbey m/s

[Jetpilot]

Good news for Chris and me when I get hold of one.

[Mark@Abbey m/s]

I have some information regarding the ECU plug , the Elgrand has 2 plugs but the PIN OUT is the same between both ECU's

 

I do have a workshop manual for the Elgrand , I can host this on my dropbox for people to down load if needed.

 

let me know please.

Edited November 7, 2016 by Mark@Abbey m/s