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  1. #1

    Default Noise at high rpm

    I recently used a Superchips cortex programmer on my 2006 1500 5.3. I have aftermarket intake, exhaust, and a throttle body "paperweight". On the performance setting I've noticed that at real high rpm this is a slight crackle noise. I am very paranoid about detonation, but hopefully the noise is not that serious. Has anyone else noticed a similar noise? Or do you know what this might be, if anything?

    Thanks, and I hope i did this right because I'm new to the forum.

    2006 Silverado 1500 Z71: K&N FIPK, true dual flowmaster 40, superchips cortex, window tint and audio mods, CB, TBS, sprayed liner/box

    1967 c10: frame-up rebuild with crate 350, too much to write

  2. #2

    Post noise at high rpm

    Im not familier with the Superchip cotex, but if it has live data in it, see if it shows knock retard. this will tell if its detenation. I have Diablo Preditor programmer and it shows knock retard.

  3. #3


    Welcome to the site!

    2002 Jeep Wrangler Sport 4x4 (the Yellow Jacket)
    4inch suspension 3inch body
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    36inch SuperSwamper TSL.
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    2004 Sierra crew cab, 2wd, 5.3 V8
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    single dumped Flowmaster 40 sieries exaust(removed)
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