Stupid knock
#1
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Boost it set at 18.5 psi and I keep getting knock and a hesitation at high rpm's. AFR's are low 11s with 93 fuel. I started with the top map below before upping the boost and had no knock. Now with the higher boost I have the knock. I changed the spark to what you see in the lower map and still have knock. Anyone have any ideas besides lowering boost?
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Last edited by levnubhin; 03-12-2010 at 03:50 PM.
#4
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So I should pull even more spark?
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That's what I was afraid of because even with a spark map close to DIY's base map I was getting knock.
![Jerkit](https://www.miataturbo.net/images/smilies/jerkit.gif)
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![vash](https://www.miataturbo.net/images/smilies/vash.gif)
I guess I'll just have to settle for 16 psi.
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