Wrong Ecu?

[rb25debt]

I have a r32 with a stagea rb25det neo.

It isn't running right and im thinking maybe the ecu has something to do with it.

The r32 is manual converted.

The current ecu is 23740 0V300

I'm sure this is the 4wd auto stagea ecu.

if my car is rwd and manual, would the ecu possibly need to be changed to a different ecu?

[wolverine]

0v800 is an auto stagea are you sure it says 0v300?

[KiwiRS4T]

That's the wrong ecu. It doesn't matter if its manual or auto but the OV300 is a Hitachi ecu for a series 1 Stagea that has the R33 engine. You need a Jecs ecu for a series 2 Stagea which had the Neo engine such as .23710 aa501 (or an R34 GTT ecu).

[rb25debt]

That's the wrong ecu. It doesn't matter if its manual or auto but the OV300 is for a series 1 Stagea that has the R33 engine. You need an ecu for a series 2 Stagea which had the Neo engine (or an R34 GTT ecu).

Yup says ov300, that would explain why its running so crap, doesn't like to boost. If i was to get a the neo ecu, would it be hard to swap over?

[rb25debt]

would you know the ecu number i would need?

[GTSBoy]

Ever used google?

[wolverine]

If the car runs then I doubt the ecu is your issue.

I would open one thread with ALL the information so you can get some help.

[KiwiRS4T]

Or read my post above?

[rb25debt]

Or read my post above?

Sorry didn't see that i'm using my phone haha

[GTSBoy]

If the car runs then I doubt the ecu is your issue.

I would open one thread with ALL the information so you can get some help.

Actually, if the car runs, and is notionally a Neo engine using an R33 era ECU.....what's the chances of it being all normal stuff in there? I thought the ECU pinout was different between R33 era stuff and R34 era stuff. There are certainly different devices (like the boost sensor) on Neo stuff. If the engine is being run by an R33 style ECU, then it's quite possible that some sensors and stuff have been changed or rewired on the Neo engine.

This car needs to be put in front of an expert who can look at it all at once and work out what it is and what to do with it. These piecemeal threads on this car are not helping. Advice I gave in the other thread about Nistuning the ECU will be invalid if it turns out to be an R33 ECU!!!!!!!

Edited October 16, 2014 by GTSBoy

[wolverine]

I reckon it will be a non-neo Stagea engine and ecu.

[iruvyouskyrine]

Pics of engine bay plz

[Dose Pipe Sutututu]

R34 NEO plug is different to the R32/33 plug. The ECU won't physically plug in, unless someone has used the R32 harness used a R33 ECU and cut/shut all the plugs on sensors to suit

[rb25debt]

[GTSBoy]

Photos with rose tinted glasses perhaps?

The engine is not from a 4WD stagea. Traction control rules that out. The ECU, if the lid matches the contents, is definitely from the early S1 Stagea. That should not plug into a Neo ECU loom plug.

You definitely have some sort of bitsa going on there.

[rb25debt]

Photos with rose tinted glasses perhaps?

The engine is not from a 4WD stagea. Traction control rules that out. The ECU, if the lid matches the contents, is definitely from the early S1 Stagea. That should not plug into a Neo ECU loom plug.

You definitely have some sort of bitsa going on there.

Yea i'm really confused, what is the engine from do you know? i'm taking it a expert tomorrow

[GTSBoy]

Neo with traction control is R34.

[wolverine]

There are three Stagea plugs from S1, one is pretty much the same as an R34 GT-t plug from memory...just to add to the chaos.

[Hadouken]

You also have that ling long turbo.

Why so many threads on all these problems? I think guys should have one thread "my car is a mechanical abortion"

Go out and get a power fc or something tunable so that you can make it run the way it should. Unless you know you have low compression in the motor and didn't check it before purchase.

[wolverine]

Neo with traction control is R34.

Could be RWD S2 Stagea as well.