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Originally Posted by VR4neophyte
OK, that makes sense (doh!). And what's your opinion on the temp sensor? Intake or IC pipes?
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The only advantage I can see by installing the temp sensor in the Y-pipe is that you can compensate for intercooler heatsoak. Ideally you'd want your ECU to pull some timing when this event occurs to prevent knocking. Someone should investigate wether or not our ECU does infact work like this.
As for the knock question,
No fancy alogorithm is required. Here's a hypothetical greddy log:
raw knock value, rpm
0.1, 800 ; no knock
0.1, 900 ; no knock
0.1, 1000 ; no knock
1.0, 1100 ; knock (subtract difference to show magnitude of knock)
1.0, 1200 ; knock
Any raw knock value reported higher than the yellow line is considered as knock. The higher up it is from the yellow line, the greater magnitude of knock.
Writing a program to do this is no problem at all. Making it fancy, and GUI takes more time.
