nismo sr20det ecu on sr20de turbo modified

[gkottis]

Hello to everyone.
I am new to the forum society and i have a question.
I own a 92 primera p10 with the n/a sr20 motor from the p11 gt (ecu,gearbox .etc.).
I also have an extra nismo ecu for the sr20det and i was wondering if i could install it to my sr20de after i tune it with a turbo kit? Will this work or i will destroy my motor.
The ecu is taken from an ex-200sx s14 (1998) wich is now blown off by a bomb. Will this work or it is a wast of time?

[CarloSR]

Hi and welcome to the forums.

Now to answer your question: the S14 ECU is different from your Primera GT P11 ECU, some pins are in different position, so you'll have to work on the harness (ECU cables), if you have the S14 ECU wiring diagram (from the 200sx) we could help you setting the right plugs for the NISMO ECU you got.

And remember the NISMO ECU was intended for a SR20DET with low compression pistons (8.5:1), 444cc injectors and a T28 turbo.

Carlos.

[gkottis]

Thanks Carlos for your repy.
I intent to make my sr20de the same as the sr20det as possible as i can.
If i manage this will it then work if i find the s14 ecu wirring?
I intent to put low compression nitrous modified pistons by ROSS,turbo Turbonetics size T3,Soearco Intercooler,NOS wet type kit for 80Hp,hole new exhaust system from downpipe and back(i have the hole sr20det system in my garage).Do you think think that the ecu will work under these circunstances? Or i will have to put additional management systems such as the APEXi S-AFCII?

[CarloSR]

No problem.

If you're going to lower the engine compression, with low compression pistons, like the ones you mentioned ROSS, and you put 444cc. injectors and a Garrett T28 turboacharger (or alike) then you won't need any other managment (fuel/air) controller, the S14 NISMO ECU (with correct wiring) will be working perfect. If you go with bigger injectors, big turbo, different MAF then you'll need another device to control and correct the extra-gas or extra-air.

I suggest you take from the S14 the injectors, MAF and Turbo (or buy them elsewhere). I have never seen a NISMO ECU ready for Nitrous applications.

Good luck and keep us posted.

Carlos.

[gkottis]

The 200sx from wich i took the ecu belonged to my cousin and it used to work (now is burnt by a bomb) at about 1.6bars boost preasure, and about 120hp nitrous with this ecu.Bigger turbo T3/T4.It had bhp with nitrous about 500.So the management cooperates with nos.
So as you say, i wont have any problems using tha ecu if i connect it properly.

[platypus_g20t]

gentlemen, i don't think this will work, especially since the s14 has direct fire ignition and ignitor setup. i don't think it's a direct swap ecu either, so harness would be needed. also, if i remember, i think the s14 sr's are the hump back versions with variable valve timing on the intake side.

compression ratio for the most part is not the big deal, nor is turbo size. most of the problems will be from sensor setup (o2, maf, engine temp, air temp, evap, etc.), fuel injectors, and ignition. those are the main players at getting an ecu to work. turbo size, compression ratio, all that is taking care of by the fuel and ignition compents.

[DaGuNiT]

damn, yall know some shit haha

[gkottis]

So Platypus.

You say that even though i modify my sr20de to turbo i will still have problems having the nismo ecu working properly.If this is true (i dont know yet) what do you suggest me to do? Should I put a totaly new ecu like the Greedy E-Manage instead of the Nismo ecu or will it be better to sell my sr20de from p11(with the ecu and harnesses) and get the sr20det from the 200sx s14 from which i already have the full racing Nismo ecu which is plug n play for that model? What do you thing is much more worthy? The E-Manage is a full open to programming it ecu unit fitting each car.
I am looking forward for your replie as i want to have my car back as soon as possible.

Thanks, George

[platypus_g20t]

Well, i would first see if the ecu has the same connector on it. then check the pinouts to see if they are compatible for the most part. the problem i see is that our sr's are for the most part different from the rwd one's. for one our's is distributor based and the rwd sr's are direct fire ignition. though our engines have the same engine code (sr20det), it doesn't mean that things are swappable. for the most part the exhaust manifolds can be swapped and maybe, just maybe the head. you need to make sure the sensors from the rwds and the fwds are the same. also, if you can plug it in and turn on the car, it doesn't mean you've solved the problem. it might still have issues cuz it is running in a fail safe mode. you need to be able to get the ecu to function (turn on car, run motor) then you need to get it to function well (be able to control the motor correctly without error).

The greddy emanage is not a stand alone unit and will require you to have a working ecu. it is a piggy back like the apexi safc and the hks safr. it requries the stock ecu and modifies the signal. you could go the stand alone route, like a motec m4, electromotive tec III, haltec e6x, etc. these are fully programmable and also relatively more comprehensive, but the cost is also much higher.

you could get a rwd sr, but i must warn you...no one has tried and it isn't really a viable solution. the motor mounts don't line up, the intake manifold points the wrong way, the turbo manifold is not setup for our application. there is really no point to try the rwd swap when there already is a sr20det (u12, u13, w10, w11, rnn14) that is a straight forward swap for us.