Question for all the hondata users in the Portland area: How do you pass smog?

From what I understand, the smog test for 1996 and newer cars is composed of plugging into the ECU port to check all the emissions control items are there and functioning.

So it seems to me that if you're running a Hondata or some other OBD1 ECU you would fail because the DEQ's computer and your ECU would have a communications failure.

However, it seems that if you swapped your ECU back to the OBD2 one and was able to make it to the DEQ without throwing a code, you would also pass...

So, with that in mind, how long does it take for a stock ECU to throw a code when running Toda Spec Bs?

Any input is greatly appreciated...thanks!

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George

 

Holy chit, I remember you.

 

i would like some info on this too, as i will be running the s200 when i get my swap ready in my 97 gsr

 

Yeah, it's been a while since expo 1.....good times.

If I'm reading the DEQ procedures correctly, all 96 and up cars basically have a computer plugged into the ECU to ensure all the emissions equipment is 1) there and 2) no malfunctions.

So, depending on the extent of your modifications, if it's just bolt ons with the Hondata, you should be able to switch back to the stock ECU without a problem.

However, if you're running further modifications like cams, I think it may throw a code. I just don't know how long it takes for the ECU to do that.

The one consideration I thought about was to run the SFAC NEO from Apexi, but it seems like that may be a sub optimal solution compared to the Hondata because 1) it only modifies the fuel map by altering the signal to the ECU, and 2) the OBD2 ECU relearns and adjusts to bring the system back to the original operating parameters.

I guess the question for me would be, for those that had the Toda Spec Bs, how long did it take for the check engine light to come on with the stock ECU?

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George