Knock Sum
#3
Evolving Member
Zero knock is what you want. Personally, I aim for no more than three counts or so. Keep in mind that the knock sensor is maxed out at 43 counts. If the Evo ECU is anything like the DSM ECUs, factory cars (which under some circumstances WILL see knock) will keep advancing timing untill about 2-3 counts anyways.
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#8
Account Disabled
quantity also
dont just look at the number value of the knock, also pay attention to the quantity of them. So for guys that say 1 knocksum is not an issue. They are wrong if you log say 2700RPM through 7000RPM with a continuous stream of 1 knocksum. That is not normal even if its not consistant and only does it every other pull what not.
RPM LOAD KNOCK
2500, 180, 0
2700, 190, 1
3000, 199, 1
3250, 230, 1
3400. 270, 1
3800, 250, 1
4250, 246, 1
4500, 250, 1
5000, 245, 1
5500, 240, 1
6000, 240. 1
6500, 234, 1
7000, 230. 1
7500. 220. 1
that is not normal and good I would say
2500, 180, 0
2700, 190, 1
3000, 199, 0
3250, 230, 0
3400. 270, 2
3800, 250, 0
4250, 246, 0
4500, 250, 0
5000, 245, 0
5500, 240, 0
6000, 240. 0
6500, 234, 0
7000, 230. 0
7500. 220. 0
I wouls say that would be "normal"
RPM LOAD KNOCK
2500, 180, 0
2700, 190, 1
3000, 199, 1
3250, 230, 1
3400. 270, 1
3800, 250, 1
4250, 246, 1
4500, 250, 1
5000, 245, 1
5500, 240, 1
6000, 240. 1
6500, 234, 1
7000, 230. 1
7500. 220. 1
that is not normal and good I would say
2500, 180, 0
2700, 190, 1
3000, 199, 0
3250, 230, 0
3400. 270, 2
3800, 250, 0
4250, 246, 0
4500, 250, 0
5000, 245, 0
5500, 240, 0
6000, 240. 0
6500, 234, 0
7000, 230. 0
7500. 220. 0
I wouls say that would be "normal"
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Jul 22, 2009 12:46 PM