[kxc36g]

Well, I failed the idle emissions test for state inspection in Texas. I passed the 3000rpm test just fine, but I could not get the car to come down on the HC for the idle test. Last year I passed; I have not made any changes except for removing the PCV. Anyone have any tips on how to get my HC down at idle? I.E. new spark plugs, emmissions pass stuff for the gas.... (the S-AFC did not have much of an effect this year-last year leaning out the settings helped at idle)

Thanks,
Chris

 

[kxc36g]

no cat, no egr, no pcv, but I did pass last year.

I am damn close to passing this year. The cut off is 220 and my car was ranging from 260-300. Last year when I leaned it out it made a big difference in HC emissions. This year it hardly had any effect. I don't know why. My guess is that the larger injectors (which were on there last year) are causing the problem. I did add an AFPR this year and I bumped up the base setting a little. I don't know if fiddling with this will help or not.

Low octaine fuel helps?
I am looking for just about anything that will get me a little cleaner burn. If that means different fuel or fuel additives I will try that.

Thanks,
Chris