[Solved] EK9 Import in Switzerland... Issues with emissions


Ghostyfkr

As JDM as it gets
Joined
Apr 9, 2010
Messages
146
Car(s)
Civic Type-R (EK9), Accord Tourer Type-S
Hi everyone,

Hope I'm in the right category of the forum... However, if I'm not, sorry about that.

I'm facing a bit of a pickle situation here in Switzerland where they are REALLY picky concerning emissions and regulations and all that s...

My car is JDM OEM as it can be, however, seems that the ECU from origin makes a huge injection of fuel on cold start and that makes the CO emissions go really high (50% above limit) at the beginning.

Another guy managed to make his EK9 road legal around here, but he says in a few blog posts that he had to change a resistance / mod his ECU in order to make the car believe that he was more warm than it really was and therefore, reduce the injection of fuel.

Can anyone help me out? Please?

One possibility is to use a Hondata s300 (as I have one and tried to map the freaking thing however I failed massively due to high HC), if someone has a B16B proper map.

Thank you all for your help in advance. Hope I can get this running soon.

Cheers.
 
No one? Damn... Feeling like the first guy walking on the moon here :)

Except for the guy from jdmjunkies.ch... who has an EK9 but doesn't help at all with anything...
 
Hi mate there used to be a trick back in the day where you would unplug the air intake temp sensor and bridge the connector with a resistor to fool the ecu into thinking the ambient temp was colder, I'm sure depending on the resistor and ohms you could trick the eco to thinking it's warmer than it is.

Also have you tried a EDM Cat as they are longer and filter more emissions
 
If you could run a Hondata s300 ecu you could play with the cold start map. @jesse888 has some experience with this as he did it with our cars.
He may be able to shed some light on this.
 
You might be able to trick the ecu into thinking the coolant temp is higher than it is, although im not sure what this will do to the fueling once it reaches temp(thinking its too hot)
If you have a wideband gauge and can feed it back into the ecu i can give this a go for you but youd have to get me datalogs of it starting cold etc
Its just the cold start thats causing problems?
 
You might be able to trick the ecu into thinking the coolant temp is higher than it is, although im not sure what this will do to the fueling once it reaches temp(thinking its too hot)
If you have a wideband gauge and can feed it back into the ecu i can give this a go for you but youd have to get me datalogs of it starting cold etc
Its just the cold start thats causing problems?

You're right on the money ;)
Solved it by tricking the ECT sensor. Now it's time to finish the homologation and become the first VSM EK9 to be road legal in Switzerland.
 
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