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knock retard

This is a discussion on knock retard within the Computer & Tuning forums, part of the LSx Technical Help Section category; okay so im getting knock retard of up to 3.14* in my t/a. its gottan as high as 5.23* but ...

  1. #1
    caraholic ggino85's Avatar
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    blue green chameleon
    1998 Trans Am

    Unhappy knock retard

    okay so im getting knock retard of up to 3.14* in my t/a. its gottan as high as 5.23* but only once that i saw. it seems to happen more in the lower rpms of first and second gear.(m6) i was wondering if i add fuel to the lower rpms at wot(2k-4k) if that might help. i have a diablo sport w/ slp's tune on it, so i can play with the tune a little. i had the same tune on my SS and had no problems and i felt a noticeable difference w/ it. so would adding fuel help??(the only mod i have added is a p/p throttle body, but i didnt check for the kr before adding the throttle body just after.)

  2. #2
    TunedbyFrost.com Tuner Frost's Avatar
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    it's kind of a blunt tool, how do you know the car is lean in that area, and how well can you target the change? I know you can't do much with spark since you can only shift the whole map up or down...

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    Member Fran D's Avatar
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    Is that at WOT? And, if so, can you confirm that you're in FTC 15 or 22? Did you check that you're getting close to 100% TP at WOT with the new TB (or, at least, wherever the threshold for PE mode is)?

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    Member 35thz28camaro's Avatar
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    2002 z28 camaro

    i was getting knock retard when my y-pipe was hitting my floor board

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    caraholic ggino85's Avatar
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    blue green chameleon
    1998 Trans Am

    Quote Originally Posted by Frost View Post
    it's kind of a blunt tool, how do you know the car is lean in that area, and how well can you target the change? I know you can't do much with spark since you can only shift the whole map up or down...
    well i was thinking it was lean in that area because thats where i was getting the kr at? i dnt know tho? is it okay to drive with that much kr?

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    caraholic ggino85's Avatar
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    blue green chameleon
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    Quote Originally Posted by Fran D View Post
    Is that at WOT? And, if so, can you confirm that you're in FTC 15 or 22? Did you check that you're getting close to 100% TP at WOT with the new TB (or, at least, wherever the threshold for PE mode is)?
    i dont think my handheld will let me get that precise. im gonna turn the power enrichment up a few degrees and see if that helps.

  7. #7
    Veteran 0rion's Avatar
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    have you logged it to see what your timing is in that area? What's your O2's saying when you're getting knock if it's in PE?

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