It's not anything out of the ordinary to have some knock activity. The sensors are very sensitive. If you monitor even the stock program you will see quite a bit of correction. What we want to see if the EXACT nature of the correction and under what circumstances. This is why my data logging list and guidelines are so important. If you deviate from this the results can be less than desired. So, again, you need to be data logging Ign Corr Cylinders 1, 2, 3, and 4 along with everything else on my list. And for monitoring I watch: AFR, Boost, and Ign Corr Cyl 1-4.