p10 ecu into p11?

[jprimera]

I t can be done?
do the ecus have the same pins?
thanks

[AZP10]

I don't believe it'll work or else it would have already been done

[jprimera]

Hi

thanks for your reply

but maybe not!
I have read in sr20forum, some guys that have done ,but in a 97 200sx
they have change sucsecfully the stock ecu for the g-20 93-94 ecu (7500 rpm cut),so I was thinking why not ? but Im only gueesing.

[1FastP11]

I think there are a few pins that are not compatible with the P11. First of all P10s have EGR and therefore BPT valves.. 2 pins P11 ecus don't have. High port engines alse had AIV. I'm not really sure but I think there differences too with the charcoal activated canister too.

Maybe by doing a lil' rewire it can be done, but you must also take in consideration that the fuel maps of the P10 are designes for a 9.5:1 engine not a 10.0:1 engine like ours.

Que pasa machucao?

[ty423]

Ummm...It was in another post...Yes it works...thats why I am looking for a 95-97 SR20 manual ECU. Luke (G22DET) has done it already. He is using a 95-97 ECU tuned by JWT for his SR20DET. That is my plans also...Its still not clear yet if there is to be some rewiring or not...but its only a few wires and is easy..thats what I hear

[b-b00gie]

You can use the earlier ECU's but you will have to rewire a few wires on your 99 harness Tony. You will also be stuck with the check engine light on.

On the 2000+ wiring harness you will have to rewire EVERY connection to the ECU.





Also the mappings are irrelevant. The reason people want to switch to an earlier style ECU is because JWT can reprogram them, unlike the P11 ECU's.

[ty423]

uhhh...was the remapping thing for me? yeah I need that ECU if I am to do the Turbo and run good...anyways thanks..

[b-b00gie]

Originally posted by ty423
uhhh...was the remapping thing for me? yeah I need that ECU if I am to do the Turbo and run good...anyways thanks..

Nope sorry, I guess I should've quoted...

The rewiring info was for you. The point about the mappings was for 1FastP11. He said you wouldnt want to use a P10 ECU, but I was stating that people arent looking to switch to a stock P10 ECU. They want the older ECU because it can be modified, unlike the P11 one.

[jprimera]

:o I totally forgot about EGR -BPT-AIV ,and 9.5 cr

Igual te las di jajajajajajaja :finger:
por ahora!

[ty423]

ok I am still kinda new to these acronyms.

EGR = Exhaust Gas Recirculation?

AIV = Accelerated Inverse Voltage????? got that from a search..hehe

BPT = I have no clue..but seen this before...

[jprimera]

Here's a close-up of the area beneath the BPT valve (which is shown at the top-left [green arrow], pushed out of the way). The rubber tube (red arrow) between the BPT and the metal tube (yellow arrow) has to be removed in order to clear the blockage. The meandering path of the BPT tube can be seen (orange arrows).








Check the se-r archives for more info

[1FastP11]

b-b00gie wrote:
The point about the mappings was for 1FastP11. He said you wouldnt want to use a
P10 ECU.

Maybe there's some things I should mention.... jprimera and I are from Chile, we get japan made P11s with roller engines, 10.0:1 CR, no EGR, one O2 sensor, among other things. Our Primeras are way different than the G20s. AFAIK It wouldn't be optimal to run ECU program designed for 9.5:1 on a 10.0:1 engine, since under extreme condition (summer by example) you could detonate (more agressive maps on the 9.5:1 ECU due to lower compresion). On american's P11 could/can be done. To the rest of the P11 south of the border...you can't! (I think there's a fair amount of people from central and south america on this forum) We've been getting this engine since the year '97 only on the P11 platform. I think central and south america is the target for this particular combo (P11 with this jewell engine, half the emission crappola to mess with, OBD-1 BTW) To the Norht amercian P11 owners I think it should work no problem.

Juan Pablo, cachai como el jote culiao se quiere sublevar?

Claudio

[jprimera]

Si
Claudio

Este weon siempre es asi

i have to agree with you claudio ,the problem is many people do not know that ours engines are diferent in many ways .emisions for example.

[b-b00gie]

I understand what you're saying. My 2000 G20 is different too and the 2000+ ECU's cannot be reprogrammed.

The compression ratio has nothing to do with it. When I turbo my car I will lower the compression from 9.5:1 to 8.3:1.


What I'm saying here is that if you use and earlier model wiring harness and ECU you can have that ECU reprogrammed to whatever you want. The newer ECU's dont have that luxury. Again the compression ratio and other things have nothing to do with it. You are not swapping to an early P10 ECU to keep the stock program. The point of swapping is to have JWT reprogram the ECU to your specifics. You cant do this with the late model ECUs.


Know do you understand?

[1FastP11]

quote:
I understand what you're saying. My 2000 G20 is different too and the 2000+ ECU's cannot be reprogrammed.

American 200+ P11 ecu..sure it can't

quote:
The compression ratio has nothing to do with it.

Really? So if I go 13.0:1 I can use the stock program with 9.5:1 maps? cool!

quote:
The point of swapping is to have JWT reprogram the ECU to your specifics.

Nope, the point was saving US$400 and see 7.5K rev limiter. Ain't that right jprimera?

quote:
Know do you understand?

Understand what?

Claudio