Barely passed new CA enhanced smog chk (m) - The BMW 5 Series (E39) Message Forum

Keep in mind I've got a few "minor" engine mods...

The surprising part is my car passed w/ flying colors even w/ those mods 2 yrs ago, but barely passed this year. Why? The enhanced smog check (aka Smog Check II) now includes NOx (nitrogen) readings. I registered a 398 out of 409 (max) @ 15mph. 25mph was better with a reading of 261/696. Interesting that the max allowable went up at higher speed, but my car emitted less. I was told that earlier when my engine was cooler, the readings were much lower. Whew!

In talking to the smog guy, he said cars like Toyota's generally have no problems passing the new smog check but he's seen an abnormal number of stock BMW's receive a no-pass grade.

Well here's my 2004 and 2003 numbers. Anyone w/ a non-VANOS 540i care to post their 2004 numbers so I can see what effect my minor engine mods had? :)

2004 Enhanced Smog Check
		%CO2	%O2	HC (PPM)			CO (%)			NO (PPM)
Test	RPM	MEAS	MEAS	MAX	AVE	MEAS	MAX	AVE	MEAS	MAX	AVE	MEAS	Results
15mph	1447	14.7	0.2	49	9	1	0.47	0.02	0.02	409	57	398	PASS
25mph	1455	14.7	0.1	33	7	1	0.44	0.03	0.01	696	50	261	PASS
2003 Standard Smog Check
		%CO2	%O2	HC (PPM)			CO (%)
Test	RPM	MEAS	MEAS	MAX	AVE	MEAS	MAX	AVE	MEAS	Results
Low Speed	570	15.8	0.2	100	17	18	1.00	0.00	0.02	PASS
High Speed	2541	15.5	0.2	130	12	7	1.00	0.10	0.01	PASS

E39 DIY Site BMWdiy.INFO
E30 DIY Site E30.BMWdiy.INFO
BMWTips BMWTips.com
E-mail

Barely passed new CA "enhanced" smog chk (m) - vietsb 2004-01-15 15:37:27 (706 views) (4045 thread views)
- Hey, how are you passing visual??? - tony540ia ©⁷⁹ 2004-01-15 21:03:37 (192 views)
  - Re: Hey, how are you passing visual??? - vietsb 2004-01-15 21:06:19 (179 views)
    - my 98 528 pass with only about - mike 2004-01-15 23:03:45 (201 views)
    - nuff said. (nt) - tony540ia ©⁷⁹ 2004-01-15 21:10:14 (110 views)
- Hey Viet... why did you get your car smogged (m) - rsmillar ©¹²⁰ 2004-01-15 16:17:10 (197 views)
  - Ooops, ur right. It was 2002. Pricing info here(m) - vietsb 2004-01-15 16:27:31 (179 views)
    - Damn... I need to get two cars smogged ASAP (m) - rsmillar ©¹²⁰ 2004-01-15 16:33:41 (182 views)
      Shop around for good pricing... (m) - vietsb 2004-01-15 17:13:16 (141 views)
  - PS - they didn't change the law, did they? (nt) - rsmillar ©¹²⁰ 2004-01-15 16:22:54 (104 views)
- I'm surprized that you just started NOx - Mike A. 2004-01-15 15:48:33 (201 views)
  - NOx ratings new? I dont think so - Tether 2004-01-15 18:52:29 (1579 views)
    - Talk to the NOxious guy above. ; ) - Mike A. 2004-01-15 19:24:50 (164 views)
    - Mike A isn't from CA & NOx is new to "me" (m) - vietsb 2004-01-15 19:14:09 (161 views)
  - Looking at your limits, I wouldn't have passed the - Mike A. 2004-01-15 15:57:04 (188 views)
- Did you drive the car on the freeway before... - edjack ©⁷⁶ 2004-01-15 15:45:01 (226 views)
  - Yes, but not very far (m) - vietsb 2004-01-15 16:14:31 (194 views)
    - Bingo! My smog guy won't let me shut the engine... - edjack ©⁷⁶ 2004-01-15 20:09:25 (255 views)