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  • #1

    false/rich knock

    Alright so I took the car out for a few scans tonight and I am getting this random a$$ knock in the same cells. But it is only in 1st gear. Since I installed the walbro I have been fighting this thing to get the AFR out of the 10's. Have any of you guys gotten knock from running PISS rich? I also adjusted my BOV so I am seeing a little more boost(it was opening under boost) so that could be another explaination.
    I have also heard of some wraping their knock sensors in dynomat to help with the false knock. Could be a good fix considering im sure the PD causes a lot of false knock.
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  • #2
    Re: false/rich knock

    This is why I desentized my Kr sensors for the last 9 years.
    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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    • #3
      Re: false/rich knock

      how do u desensentize? is that something in hptuners? i remember from my lt1 s10 days that people would switch to lt4 knock sensors. of course they didn't have hptuners support.

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      • #4
        Re: false/rich knock

        He is talking about physically wrapping them in sound deadening material.
        <a href=\"http://www.fullthrottlev6.com\" target=\"_blank\">www.fullthrottlev6.com</a><br /><a href=\"http://www.chitownracing.com\" target=\"_blank\">www.chitownracing.com</a>

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        • #5
          Re: false/rich knock

          Originally posted by Bird_Of_Prey View Post
          He is talking about physically wrapping them in sound deadening material.
          I did mine with resistors , they have worked great the last 9 years. I have posted the diagram before, FireBirdGT will have the instructions and program on his site.
          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

          Comment

          • #6
            Re: false/rich knock

            dynomat is not a bad idea. Id still like to know if I was getting actual knock.

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            • #7
              Re: false/rich knock

              How much KR are you getting? Resistors are the safiest way it with still running KR sensors, they still report KR but are toned down alittle. I remember when I ran the PD I thought the vibrations from the PD unit where causing KR. The resistors helped out alot.
              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

              Comment

              • #8
                Re: false/rich knock

                I see some in wierd places steve. Like 3-4K around 35-45mph is a pretty strange spot(Like 2 KR) and then around.80 and.92 4000-5500I get a slew of it. 3* 4* 5* basically in that corner.

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                • #9
                  Re: false/rich knock

                  Most likely false, how much timing are you running and whats the temp outside?
                  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

                  Comment

                  • #10
                    Re: false/rich knock

                    temps around 40 and im running 15-16 where im getting the knock. bumped it down to 10 and the knock went away

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                    • #11
                      Re: false/rich knock

                      If its only 40 out you should be able to run at least 13 degrees , I would say your getting some false KR.
                      Last edited by ssms5411; 03-30-2011, 12:49 PM.
                      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

                      Comment

                      • #12
                        Re: false/rich knock

                        yea figured as much. Maybe i will try some dynomat when it gets warmer out

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