Ming Posted May 25, 2023 Report Share Posted May 25, 2023 Hi i encounter dip in my knock counter logs. is this normal or is there something wrong with my setup? im currently using Bosch sensor. Quote Link to comment Share on other sites More sharing options...
Adamw Posted May 25, 2023 Report Share Posted May 25, 2023 What do you mean by "knock counter dips"? The knock counter will just count up 1 every time the knock level exceeds the knock threshold. It is dead flat with no dips in the picture you have attached. You are better to attach the actual log file and tune for any help in future, a picture rarely gives adequate info. Quote Link to comment Share on other sites More sharing options...
koracing Posted May 25, 2023 Report Share Posted May 25, 2023 I believe he's referring to the knock threshold and reported values intermittently going to zero. Probably has something to do with TPS rate of change lockout or some other parameter locking out knock detection during that log. Posting the actual log would be helpful to trouble shoot. Quote Link to comment Share on other sites More sharing options...
Adamw Posted May 25, 2023 Report Share Posted May 25, 2023 If you are in fact talking about the threshold dropping to zero and the threshold table doesnt have zeros in it, then you can view the "knock system status" runtime to see what is locking the system out. Quote Link to comment Share on other sites More sharing options...
Ming Posted May 26, 2023 Author Report Share Posted May 26, 2023 On 5/25/2023 at 10:25 PM, koracing said: I believe he's referring to the knock threshold and reported values intermittently going to zero. Probably has something to do with TPS rate of change lockout or some other parameter locking out knock detection during that log. Posting the actual log would be helpful to trouble shoot. yes this is what i meant. thanks for clarification. On 5/26/2023 at 5:25 AM, Adamw said: If you are in fact talking about the threshold dropping to zero and the threshold table doesnt have zeros in it, then you can view the "knock system status" runtime to see what is locking the system out. heres my log Quote Link to comment Share on other sites More sharing options...
koracing Posted May 26, 2023 Report Share Posted May 26, 2023 Every time the knock threshold drops out it says it's due to TPS Delta - this setting is on the Knock Setup window. It seeems odd to me, however, that sometimes when the knock threshold isn't saying it's dropping out due to TPS delta, knock table level 4 and 2 are often dropping to zero. I assume this may be due to the sampling rate of the PC log being on the slow side. I would increase your TPS delta lockout first and see how the logs look after that. Quote Link to comment Share on other sites More sharing options...
Ming Posted May 26, 2023 Author Report Share Posted May 26, 2023 2 minutes ago, koracing said: Every time the knock threshold drops out it says it's due to TPS Delta - this setting is on the Knock Setup window. It seeems odd to me, however, that sometimes when the knock threshold isn't saying it's dropping out due to TPS delta, knock table level 4 and 2 are often dropping to zero. I assume this may be due to the sampling rate of the PC log being on the slow side. I would increase your TPS delta lockout first and see how the logs look after that. thanks i will try this first Quote Link to comment Share on other sites More sharing options...
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