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Thread: Knock issues false or real.

  1. #1
    Tuner in Training
    Join Date
    Mar 2016
    Posts
    14

    Knock issues false or real.

    I have a 99 Vette stepped long tube headers, full x pipe and bb prt catback, ported ls6 heads by LPE, ls6 intake manifold, blackwing intake, stock injectors and coils, btr na stage 1 cam 223/230 .610"/.573" 115+2. Tuner said its got to be base engine related. I performed a cylinder leak test on all cylinder all were about 7-10 percent no issues found leaking intake or exhaust or coolant. I have checked made sure cam was in time properly, headers dont seem to be hitting anywhere. The wideband though is not hooked up these logs, i will have to hook it back up for a log.
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    Last edited by 92Z28; 07-05-2016 at 08:00 AM.

  2. #2
    Advanced Tuner
    Join Date
    Nov 2015
    Location
    In a sandpit
    Posts
    444
    Hmm, well I am for sure no expert, hopefully someone who is will answer, I can say that on my own car I never saw KR like that! I run roughly similar level of tuning and my WOT advance is the same. I don't get ANY KR with that adv on high throttle. Are you sure it couldn't have e.g. a mechanical problem that triggers the sensors? You are also running richer than me as well.., which makes it even more surprising.

    -D
    99 TA, Texas Speed LS376, PRC heads, 233/239 cam, Fast 92mm, 95mm TB, card style MAF, Tick TR6060, Strange 4.11 12 bolt axle & clutchpack diff, Strano springs/dampers, Vette 18" wheels, Vette disks, CTS-V calipers, 16lb flywheel, long tube headers, no cats.