Passing smog - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 07-03-2003, 01:09 AM   #1
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Default Passing smog

Has anyone passed smog with their mods on??
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Old 07-03-2003, 01:33 AM   #2
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I live in the country...so who knows!
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Old 07-03-2003, 04:00 PM   #3
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With a larger intake and stuff i wouldnt see why you wouldnt. You just need a clean enough burn i would assume. Lowering the temperature helps that too because you release less of one of the polutants.
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Old 07-06-2003, 04:15 PM   #4
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I have 92ssei see below all of my mods.I live in Ca. Going to smog next week , I'lll post next week on results. I'm concern about the visuale smog inspection of the motor with having 95 mods on it? There'* no way I'm going to instal the AFC2 air control before the smog test. another concern is cat.conveter,magnaflow muffler,the smog rip off is coming next week.
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Old 07-06-2003, 05:38 PM   #5
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Good Luck!!!!!!!!!!!
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Old 08-03-2003, 12:35 AM   #6
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Nothing like waiting to the last few days to smog bonne. took car in for pre-test, tech says[ what for] these cars always pass smog.guess what it failed the nox-1101ppm limit is785ppm.the hc 2ppm limit 114ppm must be 95throttle body bypassing too much air.I going to try 100 octane fuel and back off bypass valve to delay boost . this will cool combustion to lower nox. I talked to a smog tech at pontiac dealer he told me to make sure they the smog techs, take the traction control off before the roller test so it does'nt apply brakes.this puts drag on testings increasing combustion heat .If this doesn't work I have the AFC-2 coming in mail this week or put 92 throttle back on the 95blower and use lots of silicon. monday or tues I'll be back to smog again
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Old 08-03-2003, 01:24 AM   #7
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I hear the fine hear in NY is $10,000 if you don't even have a CAT.
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Old 08-03-2003, 01:40 AM   #8
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In KY you pay $25 for a test and if you fail 3 times (at $25 a pop) you automaticaly pass. Now is THAT saving mother earth or what?
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Old 08-03-2003, 02:09 AM   #9
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It'* $14 a pop here. My old car failed twice for minor stuff. One shop failed it for more stuff than the previous one. So I fixed the one problem Pepboys said it had and got it passed.

I know CT has very laid back laws about inspections too. I saw a car driving down there that was TOTALLED in the front. It was missing a hood and crunched pretty bad. Had no lights. (They also don't have to wear helmets on motorcycles)
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Old 08-03-2003, 03:34 AM   #10
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They got rid of the emissions tests in MN, so neener neener neeeener!! LOL!!
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