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OK, I have searched and searched (and searched some more.....), so please do not flame me if I missed something!
I am in Australia and own a 93 NX-R (SR20DE powered) - my question is how do I know if the ECU is obdI or II? As far as I can tell, you U.S. guys went to the obdII system a number of years before Japan, however, I do not know what happened here in Aus. Is it marked somewhere on the car/ECU/etc.?
The reason I am asking is I am looking at a VE swap, and therefore need to know if a JWT ECU is possible for me seeing as I may not even be running the same ECU's as you guys. I want those fuel maps!
Thanks for your help guys, I appreciate it.
__________________ ***. NX-R Coupe - SR20DE Power....
you are OBD-I. Even the US cars were not OBD-II until 1995 at least. It is not marked anywhere but I have yet to see a 93 and OBD-II.
You are definitely not running the same ECU as the US cars of the same year. They had EGR which yours does not have. If you plan on going with JWT you will need to get a spare ECU from a same model/year car in AU and send this one to JWT for reprogramming.
Thanks for that Chris, the EGR didn't even cross my mind - and I know it is a difference between USDM and Aussie NX's.
So JWT can re-program any ECU for the VE's fuel maps, correct? I had just assumed (not to self, don't assume) that JWT only reprogrammed certain ECU's that they had put the time/research into.
No, apparently they weren't....my bad. All the posts I have read have left me a bit sketchy in the whole thing, which is why I asked the question. Thanks for your responses.
I have been asking around to see what others who have done the conversion in Aus did ECU wise, and it seems they all used the VE ECU and loom! Although these are all to the N14 Pulsar chassis (around the same year as the NX's though). I am trying to find out how they used the VE loom and what was required to do so....it doesn't appear that anyone has converted an NX in Australia.
Hmm I will be doing a conversion in July with the DE ECU so I hope I dont have a different ECU. My car is a 93 build (made in Japan) Pulsar SSS and it has a EGR setup.
Hmm I will be doing a conversion in July with the DE ECU so I hope I dont have a different ECU. My car is a 93 build (made in Japan) Pulsar SSS and it has a EGR setup.
You should be right with the DE ECU by the sounds of it. Surely the fuel and ignition maps (terminology?) of any DE ECU must be very much the same - after all, USDM and Aussie DE's all had very much the same power/torque figures.
If I go ahead with this I'll start with the DE ECU, but don't want that to be a permanant solution, I want to make sure I can change to a JWT - it is just going to cost more time and money now if we have to send one of ours to JWT first (I was hoping my ECU was the same as USDM B13's so I could just pay JWT's refundable core charge).
Not all de's are the same. My mate has a primera de with higher compression.
If i could I would use the VE ECU + harness. imo thats the best way, the way the factory designed it. If that's not an option just get a unichip/chiptorque or an emanage like i am, all are cheap, reprogrammable and if something goes wrong you can get it fixed easier. Don't forget we have some of the best Sr20 tuners and ecus in oz.
Don't forget we have some of the best Sr20 tuners and ecus in oz.
Yeah but how many know the VE - to tune a unichip/chiptorque on a dyno could take how many hours (at large amounts of dough per hour). JWT is a plug and play option, and their VE experience is second to none, it just seems like the easiest option - except for the distance factor.
Anyway, everyone else here in Aus has used the VE ecu and loom in their N14's. If it is an easy thing to do then great, but nobody seems to be doing this on the B13 (such as my NX).....unfortunately I don't have the experience/time/money to be the first to do it...I need to know an option that is guaranteed to work for me with as little hassle/experimentation as possible.
Everyone else has done it with the VE ecu and loom so just go that way if you're concerned. Worst case senario you end up using the de ecu + loom. The only reason im not doing it that way is because i got the engine by itself for $1000. Tuning a VE is like tuning everything else, it's not some fine art. Just use DE maps as a base point and work from there.
Look I'm going to be honest here, if youre worried about money for dyno tuning then you best off save a lot more before even looking towards the ve. most engines will be 2k+. Might aswell go the det if your worried, it would end up cheaper
What I was saying is why spend money on hours of dyno tuning when there is already a proven answer - the JWT ECU.
I'd use the VE ECU and loom if I thought it was possible, seems to be possible in an N14, but nobody has done this to a B13 chassis, that is my concern on that one.
***. NX-R Coupe - SR20DE Power....
