I hope someone can give me a clue on this... Can't get rid of knock, but I noticed I seem to get knocks when the EGR/CCP is engaged. This must be a clue of some sort. I am running an 89 5.7 GTA/ Vortec Heads TPI

Here's what I mean:


RPM______Speed__KCounts_KRetard_Load____EGR_DC__CCP_DC__TPS_V
2075_____23_____6_______0_______192_____100_____4.7_____2.33
2125_____24_____6_______0_______206_____100_____4.7_____2.61
2400_____25_____7_______1.6_____197_____0_______4.7_____2.9
2900_____25_____7_______4.4_____208_____0_______4.7_____2.94

RPM______Speed__Counts__Retard__Load____EGR_DC__CCP_DC___TPS_V
2250_____11_____8_______0_______176_____100_____26.7_____2.18
2525_____12_____8_______0.9_____209_____0_______26.7_____3.82
2950_____14_____9_______6.7_____218_____0_______26.7_____4.33
3325_____18_____10______12______225_____0_______26.7_____4.41
3600_____20_____10______10.5____226_____0_______26.7_____4.43
3875_____23_____11______12.1____226_____0_______26.7_____4.45
4175_____25_____12______10.9____222_____0_______26.7_____4.45
4375_____29_____12______8.4_____211_____0_______26.7_____4.45

RPM______Speed__Counts__Retard__Load____EGR_DC__CCP_DC___TPS_V
925______10_____12______0_______177_____18.8____1.6_____1.33
1400_____10_____13______1.2_____178_____0_______1.6_____3.02
1950_____10_____13______1.1_____187_____0_______1.6_____4.41
2225_____11_____13______0.9_____190_____0_______1.6_____4.45
2525_____11_____13______3.5_____208_____0_______1.6_____4.45

RPM______Speed__Counts__Retard__Load____EGR_DC__CCP_DC___TPS_V
2225_____11_____19______0_______171_____100_____6.3_____1.94
2450_____12_____19______0_______193_____100_____6.3_____2.33
2675_____13_____20______1.9_____206_____0_______6.3_____2.8
2900_____15_____20______2.8_____213_____0_______6.3_____3.2
3200_____16_____20______2.8_____220_____0_______6.3_____3.59