Knock

So I've got my wideband reading between 12.7 and 12.8 using the inTuner. From what I've learned so far, that is enough fuel.

I logged a pull and I got a knock reading of 3.2 at 4075 rpm and another one of 1.9 @ 4125.

Any suggestions to get this lowered? I'm unable to see what my injector duty cycle is. I'm on stock injectors with LT headers, 3" exhaust, and a k&n intake.

I could add more fuel, but that would make me a little rich. I also have the access mess with the spark a little bit.

Please educate me!

Attached is the data. If you'd like me to add more data to the graph, look the left at options to view and I'll post another pic.

Attachment 8208

Remove timing equal to the amount of knock at the rpm indicated

Are we talking degrees? I don't think I can do that with the diablosport inTuner, or can I?

That's why you get real tuning software

Very true.

I saw on my inTuner an option for spark timing. I took 3* of spark away from the 4k rpm range and 1* from the 5K range and logged absolutely no knock. tuned again with only 2* taken from 4k and 1* from the 5k and had .26 knock at 5400 rpm. settled for 1* from the 5k range and need to try again with 1.5* from the 4k range. A/F still at 12.6 - 12.9. The only thing I can't see is my injector duty cycle.

The inTune is actually helping me out in a great way. So far it's enabled me to get enough fuel to my engine and take enough timing away to get rid of any and all detonation.

Not bad if you ask me.

Quote:

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Originally Posted by griff364

Very true.

I saw on my inTuner an option for spark timing. I took 3* of spark away from the 4k rpm range and 1* from the 5K range and logged absolutely no knock. tuned again with only 2* taken from 4k and 1* from the 5k and had .26 knock at 5400 rpm. settled for 1* from the 5k range and need to try again with 1.5* from the 4k range. A/F still at 12.6 - 12.9. The only thing I can't see is my injector duty cycle.

The inTune is actually helping me out in a great way. So far it's enabled me to get enough fuel to my engine and take enough timing away to get rid of any and all detonation.

Not bad if you ask me.

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thats pretty good