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SR20DET Timing drift


Kevin Tyler

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Hello all, 

I was going through some logs and trying to pin point an issue. From what I have noticed, I have found some lean spots in the higher rpms for a very very short period of time, usually 0.1-0.3 seconds as well as a deviation in rpm for around the same amount of time (usually not during the same time). 

I am leaning toward the CAS/optical sensor losing its position or disc warpage at a higher load/higher rpm. Engine is cammed but mildly and has springs. 

I will upload a log or two as well as the cal file. I am just looking for another opinion or a second set of fresh eyes. 

Lean event: 0:58-1:00

Rpm event: 0:42-0:44, 0:48-0:48.5 0:57-0:58

 

 

Tune 7-31-22 Denver.pclr Log 9-5-2023-01.llg

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You have hit the RPM limit at 0:47, 0:57 & 0:59.  Your trigger error counter increments when this happens and the RPM still appears to be below the RPM limit at these time points so it is likely a trigger error causing a short spike in RPM above the limit value.  

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