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  • #16
    Re: emissions and reducing HCO

    hmm, why would the spark be weak at idle, but be perfect at cruise?

    Same with the Cat? the car is stupidly clean at cruise...

    2002 SOM Z28 Camaro - 12.9 @ 104 mph
    1996 3800 Camaro - 13.43 @ 100.77 mph


    Project Cars | How To Guides | Scratch Repair | Synthetic Oil

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    • #17
      Re: emissions and reducing HCO

      Big cams don't like to idle. The hotter spark helps clean it up.
      sigpic

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      • #18
        Re: emissions and reducing HCO

        Originally posted by Mogobs30th View Post
        Not possible considering the ICM and PCM are controlling only three coils. You need to find a way to control 6, and you're going to need more than just an MSD DIS-4. Wouldn't see the point unless you're building something insane....
        Exactly what i was gonna say.
        Daily: '02 Black Yukon Denali
        Toy: '06 Torrid Red GTO
        Gone: Powerdyned '02 Pewter Camaro
        Gone: '07 Charcoal Yamaha R6
        Gone: Ex-wife, lol

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        • #19
          Re: emissions and reducing HCO

          Originally posted by bigbrian442 View Post
          Big cams don't like to idle. The hotter spark helps clean it up.
          hotter being lower spark timing then? or more spark timing?

          2002 SOM Z28 Camaro - 12.9 @ 104 mph
          1996 3800 Camaro - 13.43 @ 100.77 mph


          Project Cars | How To Guides | Scratch Repair | Synthetic Oil

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          • #20
            Re: emissions and reducing HCO

            hotter spark being more spark energy, hence the MSD ignition.
            Daily: '02 Black Yukon Denali
            Toy: '06 Torrid Red GTO
            Gone: Powerdyned '02 Pewter Camaro
            Gone: '07 Charcoal Yamaha R6
            Gone: Ex-wife, lol

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            • #21
              Re: emissions and reducing HCO

              Im going to bump this thread. What do you guys know about acetone and denatured alchol?

              They just recently changed our emissions for 2013 and all 98+ vehicles get the OBD2 test, while I get shafted and have to do a 2 speed idle test.

              Last time I could do a "deal", now they have changed the setup so that they are filming/taking pictures of the whole process...Not sure if I can get this thing on the road unless I figure out a way to clean up the idle some.

              The test now only checks HC and CO, not NOX anymore, which is good I guess. Looks like from my post 2 years ago on here that I was high in HC, don't know where my CO sat at.

              Whose an expert at passing these things? I am going to bump my spark way up as suggested much earlier (didnt do that last time)

              But I want to hear more about denatured alchol/methyl hydrate

              2002 SOM Z28 Camaro - 12.9 @ 104 mph
              1996 3800 Camaro - 13.43 @ 100.77 mph


              Project Cars | How To Guides | Scratch Repair | Synthetic Oil

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              • #22
                Re: emissions and reducing HCO

                I would bump your idle up to 1000 rpms and see how it does.
                08' L76 6.0L 4X4 Chevy EXT.Cab LTZ Vortec MAX with Snug top cover, Dynomax exhaust,Hptuners& K&N intake
                96' Camaro M5 to A4 conversion, alot of mods . GT35R Turbo full suspension. Built engine

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                • #23
                  Re: emissions and reducing HCO

                  I had bumped up to 1200 for the test, I regularly sit at about 1000, anything less and the car isn't very happy

                  2002 SOM Z28 Camaro - 12.9 @ 104 mph
                  1996 3800 Camaro - 13.43 @ 100.77 mph


                  Project Cars | How To Guides | Scratch Repair | Synthetic Oil

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                  • #24
                    Re: emissions and reducing HCO

                    Originally posted by LETZRIDE View Post
                    They just recently changed our emissions for 2013 and all 98+ vehicles get the OBD2 test, while I get shafted and have to do a 2 speed idle test.

                    Last time I could do a "deal", now they have changed the setup so that they are filming/taking pictures of the whole process...Not sure if I can get this thing on the road unless I figure out a way to clean up the idle some.
                    When did they change this?? Taking pictures of the process? Either where I take it fudges the whole thing or I didn't hear about drastic changes...
                    In America's Hat!

                    1997 Camaro 30th 'vert... GT1 cam/C6 wheels/Flowmaster/HIDs/Viper 2 way alarm/Alpine audio mods up the wazoo
                    2005 Equinox LT... mostly stock daily/Thule snowsports roof system/sound + interior mods

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                    • #25
                      Re: emissions and reducing HCO

                      Originally posted by 1997Canadian3.8 View Post
                      When did they change this?? Taking pictures of the process? Either where I take it fudges the whole thing or I didn't hear about drastic changes...
                      January 2013 new emissions tests/standards have been implemented. You could get away with fudging prior to.

                      http://www.ene.gov.on.ca/environment...y/drive_clean/

                      They don't tell you that they film it on their website, but I have been talking to my sources and there is a discussion in the canadian section on ls1tech regarding it. It is going to be extremely tough to fudge the test.

                      The test doesn't need to be "filmed" I don't believe, it's actually a series of pictures (clarifying what I said earlier) but they have to be of the front/back/side/dashboard of the vehicle.

                      2002 SOM Z28 Camaro - 12.9 @ 104 mph
                      1996 3800 Camaro - 13.43 @ 100.77 mph


                      Project Cars | How To Guides | Scratch Repair | Synthetic Oil

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                      • #26
                        Re: emissions and reducing HCO

                        Thank God I still plate my vehicles in Indiana.
                        1995 Pontiac Firebird
                        2008 Chevrolet Silverado LT Crew Cab 4x4

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