reading knock sum
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reading knock sum
hello, i am wondering if you need a wideband to accuratly look at the knock sum the car makes. now when i click on the knock sum there is none but i was wondering if i need a wideband to do it.
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well id say its acceptable, my car is running weird, i have a vendor here working on the email flash, im going to have to lower my boost down to 21 again, otherwise leaving it at 23.5-24 im knocking as high as 18 counts around 7100rpm and a consistent 6-9 from 6300 rpms so id say 1-2 counts is good, or you can pull timing one degree and possibly get none
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However, without this guauge, one can look at knock sum to tune your high octane map- richening the mixture or adjusting timing when you see counts of knock.
If you see a count of 6+ knock, your evo's ECU will divert to the low octane fuel map as a safety net.
I'd say if you are not seeing any knock it is because you don't have any- meaning that your car is tuned well or perhaps you could lean it out more until you see knock counts and then adjust timing for maximum power.
Last edited by 80210; Aug 6, 2007 at 09:38 AM.
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jcsbanks
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Oct 7, 2006 02:25 AM