I have come to realization that for my OBD2a car I need to go with an OBD1 ecu and a system like Neptune, Hondata, etc.

It seems like the 2001 newer computers can be done. Have searched here and on the net can't find a solid answer.


My question is why there are no 96-00 OBD2 systems along the line of the above companies? Why can't they by reprogrammed?

 

they can b, but a jumper harness is cheaper. Hondata has several obd2 ems, like kpro which can do 06 si's and they have ems's for s2k's and crz's also. In the state of nc the obdII system is considered our emission testing. So when u get a inspection and ur mil (check engine light) is on, u fail because anytime the mil is on ur are producing 1.5 times the federal limit for emissions for ur praticular vechicle. So any ems u get has to be compatatble with the emission testing.

 

Name one OBD2 system that is compatible with a 96-00 Honda/Acura. I have not found any.




Where did you come up with this fact? There is absolutely NOTHING with a passing NC emissions test that guarantees that a car is under it's federal emissions limit.

 

You won't find any. 96-00 Civic/Integra ECUs are not reflashable and they have no provisions in the ECU for external chip access. It's more cost effective to go OBD1 and keep your OBD2 ECU for emissions.

 

Does this mean it can not be done at all? Or is it just not cost effective to bring it to market?




I have all ready determined that. I will be getting a Neptune when I can scrape up the cash. My thread is about why OB2 tuning can not be done. Even more curious when I see newer Honder ECU's that can be tuned. Wondering specifically about 96-00 Honda ECU's.

 

Being reflash capable is required for all 2004 and newer vehicles sold in the US. Honda started in 2002.

 

Good info. I have been wondering why the newer ECU's can be programmed.






What about my last question?
Does this mean it can not be done at all? Or is it just not cost effective to bring it to market?

 

Neither. I can make it cost effective for me by charging a lot for it... but why? I already offer an affordable option for OBD1 and it's cheap to switch over.

 

So it can be done. I figured it could be done but it would cost prohibitive to bring to market especially since there are so many cost effective tuning options available. Nothing to be held to, but what kind of approximate price tag would be put on something like this?



Few more questions if you would. Curiosity more than anything.

Does the technology exist that would allow an OBD2 ecu to be programmed but still allow it retain all of the OBD2 sensors functions? For instance where I live has "emissions" testing that consists of connecting to the OBD2 port to check for any DTCs and to verify the readiness status is complete. If there are no codes I pass. In an ideal world I would like an ECU that I could tune and not have to deal with the issues of swapping out an ECU and hoping I do not "throw" a code on the way to the inspection. In states that have actual sniffer tests, there could be a tune just to pass the emissions part of the test without changing any parts.

I know I am probably a tiny minority here but I would gladly pay a substantial amount of money for a programmable OB2 ecu for my car. For instance I am looking at ~$700 for a OB1 ecu, harness and Neptune RTP to put in my car. $300 just to get an ECU and harness to be able to use the RTP. For instance say there was a OBD2 system that could be installed in by current ECU for $1000 that $1000 would go straight to the tuning/ECU modication company. For only $300 more out of pocket I could guarantee I would not have any code issues when swapping back to the OBD2 ECU and would have to do nothing other than make my yearly drive to my inspection test. Would be something I definitely pay a premium for, likely more of it do everything a current Neptune could do. Hell I even considered an AEM EMS at $1200 if it would do the above, but it does not. Same emissions testing issues for me.


It is nice to dream. isn't it?

 

I don't really discuss hypotheticals. It can be done. I currently have no interest in doing so for 96-00 ECUs.

 

There are actually a lot of OBD2 ECUs that can be tuned and still pass emissions, just not on the 96-00 hondas

 

Old article on chipping OBD2 Honda ECUs, at that time there were a couple of places that could do it, right now I don't think anyone in the US is doing OBD2 chipping for these cars. Also, I'm not sure if they still communicate with the DLC port after they've been chipped.

http://www.superhonda.com/forum/f99/...d2-ecu-337498/

 

The reason it isn't cost effective is the MCUs are OTP (one time programmable) and at $60 a pop and no very good way to do real time tuning...it was never in a good spot to catch on.

I think Ericks Racing did some 96+ ECUs for a while...

 

dip from pgmfi.org has an working solution for obd2a p73 and p2t ecus http://d.pelegri.free.fr//Electroniq...Version-1c.pdf

 

can't you just get an AEM EMS? will it work with the OBD2 port?

 

No the AEM will not output information that a scan tool or emission machine would be able to read as "factory readiness"

 

Thanks, now I know the why no one is doing them.




Link is not working.

 

Thanks, now I know why no one is doing them.




Link is not working.

 

I'll name you 3

1) Power FC
2) AEM EMS
3) E-manage

But people here believe both Power FC and E-manage are sacrilige because they don't want to understand it.

 

The AEM has OBD2 plugs but is not an OBD2 system. It does not show up when connected to the OBD2 connecter.

Power FC-I thought I read it is the same as the AEM (OBD1) but I am going to call and verify. Would definitely consider it if I could pass the emissions test.


E-Manage would allow me to pass my emissions test. My only issue is for the exact same cost I can get into a complete OBD1 Neptune setup. The advantage of the Neptune is a I can find MANY qualified people who can tune it. The E-Manage would more or less be up to me to figure out. If I could score a E-Manage for a really sweet price I would do it since I would not have to worry about swapping parts for my emissions test like I will have to do with any of the OB1 systems.

 

Power FC is OBD2A pluggable but uses sensors basically that are B16B or Type R. It also doesn't error code in the same manner. even when they switched processors. (I own Power FC, but also live in an area where emissions is not tested)

 

Convert to k-series

 

Just spoke to Apex, the Power FC is not OBD2. It is plug in for OBD2 but does not have the OBD2 diagnostics.

Only option is the Greddy E-manage. For the money I think I would be better off with a Neptune OBD1 setup.



Thought of that. Want to stay B-series until this engine gives up. Don't have the money even if it did right now.

 

Yeah, that's what was trying to say. It PLUGS into OBD2A, but has sensors as though its not EVEN OBD1.

 

The only ecu that can function and with obd2 protocol is the factory ecm.
That is readyness monitors, continuous monitors, closed loop corrections controlled by fuel trims, ect.
I just got back into honda after a hyatus of tuning and wrenching on wrx, evo, and the likes.
But I have come to the conclusion that their ecu is just better simple as that.
They contain a writable memory block that can be flashed as many times as you want. So open source tuning suites are availible and have better options then hondata, and its free, just need 200$ of hardware.
The honda ecm has no memory block for flashes.
And Im upset about this cause the obd2 system is better, who and the hell would want to downgrade, and I refuse to.
Thank god Ill have a stock R in my build and ill run p73box.

But Im with you on this one,
but have just figured why they cant do them
No flash memory address.

I have came across a couple instances where I have seen them chipped but I hope when done its a dead on tune. cause its more costly to chip these.