[roadie]

Someone help !!!!
I have failed my e-test twice now (in Canada). They do a 2 speed idle test, for both carbon monoxide and hydrocarbons. My CO is fine, and my HC is fine on the high speed idle (2500rpm), but I have failed low speed HC both times..... I am not failing by much, the limit is 200 and I have scored 232 and 223 respectively. I am assuming that she is runnung too rich at idle. how can I temp. cut back the fuel ?? I thought about allowing the car to take in a small amount of air not thru the afms, but I'm unsure how much of an impact this will make. There is an aux. pipe on the intake hardpipe I could utilize for this.....
Very modified r32 by the way......Thanks....Kev.

 

[Nocturnal]

SAFC and just lean it out for the test?

Be the cheapest and easiest fix. Unless you have PowerFC or F-Con already.

Just a thought.

 

[roadie]

The car was remapped with a standard ecu in Japan, so I cannot regulate the fuel via SAFC, PFC, etc. Gonna have to do it 'old school', but how I'm not exactly sure.....

 

[Nocturnal]

If the car was map with a standard ECU in Japan (so it is a EP ROM Chip) like Mine's etc...

Then you can add the SAFC-2 on it and modify the low position map. Just keep everything at 0% over 2500 RPM and the ECU won't even know if anything was there.

Once you pass the emission test, just take it back out.

I can't see what can go wrong the long as you are still running MAF meter.

But if I am wrong, someone say something before roadie blow his motor. :runaway:

 

[fabianGTR34]

Another trick is to make an air leak between the AFM and the compressor inlet, this way your engine gets more air then the ecu measures so its leaned out a bit. This will get the emissions down, exept the NOx. I did the same trick on a 200sx and it worked well. But it is not safe to drive under load as you're running lean. I had made a 7mm leak in the crank case ventilation hose by drilling a hole in a piece of aluminum tube wich is then reconneced to the suction pipe.

Since you're just failing the test a little a little hole would do I guess, and dont forget to remove the pipe / leak as soon as possible after the test.

Good luck,

fabian

 

[roadie]

That's along the lines I was thinking. The tube I am using was closed off with a plugged rubber hose. I have removed the hose, and covered it with cloth so it is not sucking in dirty air. It is kinda on the large size (1 1/2) inch diameter, but the cloth seems to restrict the air enough to keep her running okay. No load and no above 3000rpm....
There is another smaller pipe I could use 10mm diameter, but I'm not sure that will suffice....
Oh' well, I'll take a shot and see how it goes.....