rb25 with z32 ecu

[240z!!!]

i preferred the actual wiring method because there is no hacking the harness its only repinning a few wires and cutting like 2 or 3 and saudering them together and adding a resistor inline for the fuel temp, which can easily be undone in a matter of minutes,
unlike the internal mods in the ecu where its pretty much done unless you have the know how to solder on boards or you have to send it off, not as easy to go back to stock, im actually going back to stock so i can use the harness for a 26 swap and can post pictures of how to undo it if anyones interested

[cozmosland]

ok so im bringing this back from the dead again.
Has anyone else gone the maxima approach? any problems or issues? im thinking of going that route and just wanna see who else has tried.

Would the car be able to run straight off the maxima ecu without any modifications? or would you have to install the nistune board and change settings within the ecu first?

[cozmosland]

Anyone???

[Omni]

after seeing this and looking at my harness it seems like the guy make this harness to work for a z32 ecu

[treymeiste]

I have done a little bit of research on it. Seems that If you decide to use a rom type tuning program NISTUNE then you can use the Z32 ecu b/c it has VVT capabilities.

Here is what I found:

One of the workshops we support has his R33 running using Z32 ECU

I'm using Z32 ECU's for R33's for some time now and I can highly recommend it.

Got fed up trying to get 33's running properly using HNR32/HCR32 ECU's. Even after modifying parts of the code to software simulate the throttle switch and a few other things, I still wasn't satisfied ....these things are just too limited. (imo)

advantage of the Z32 ECU is it will retain VTC on the R33 and the Z32 ECU has in/outputs left when used on the R33, which can be used for other purposes (only possible after extensive code modification though) For one customer I reprogrammed a "Z32 ECU converted R33" to have the ECU switch water injection, have a map sensor instead of a MAF sensor and have the "check engine" light come on when detonation was detected.

When using a Z32 ECU you can basically use a stock Z32 binary and copy over the most important constants, maps and tables from the R33. To get it perfect some parts of the code need to be modified, but with stock code it will already run 10 times better then when using a R32 ECU

>> Still to grab the exact wiring modifications required from him

for the RB25DE(T) based R33's these are the wiring modifications:

R33 pin 19 to Z32 pin 34 R33 pin 105 to Z32 pin 110 R33 pin 110 to Z32 pin 105 R33 pin 112 to Z32 pin 114 R33 pin 114 to Z32 pin 112

R33 pin 57: cut Z32 pins 29+52 : join

Best is to use a FIELD harness extender, so you don't have to chop up the original wiring harness.

Because an unmodified Z32 ECU only has 1 detonation sensor input, you will have to choose which sensor you want to use. if you leave pin 23 (r33) connected to pin 23 (Z32), it will monitor the sensor for cyl. 1-3 if you rather have it monitor the rear cylinders 4-6, you will have to cut pin 23 (r33) and connect pin 24 (R33) to pin 23 (Z32)

Only thing I haven't been able to figure out, is how the auxilary fan on the R33 is switched....can't find it on any of the wiring schematics I have.

Jollwah had a typo correction:pin 52 is the pos sig for the crank angle sensor.

the correct pin is 55 (LH exhaust gas sensor).

Info gathered from here: http://ecu2.forumwise.com/ecu2-thread1825.html

And you can get nistune from here: http://www.nistune.com/

Im going this route when tax return comes around.
Modified by meet07 at 6:42 PM 8/13/2008

i have a z32 computer on my s2 rb25 untuned, but just a quick correction you do not have to choose whitch detonation sensor you want to run you can jump them togeher since they put out a voltage not amperage and it will always read the highest voltage from both.