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Knock issues again-partial throttle LOG

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joosdawg

15+ Year Contributor
187
3
May 8, 2005
Appleton, Wisconsin
well like usual my impossable tune is creeping up on me again(or im retarted) but im still very new at tuning... If any of you saw my other thread i got my hi throttle and WOT tune down perfect no knock and thats fine. BUT i decided to redo all my settings on the SAFC one night for low throttle and wound up with a TON of knock at partial throttle while trying to get up to cruising speed of 30mph. I just changed trans fluid, oil and filter, xfer and rear diff fluid, plugs, thermostat and poured a gallon of coolant through the system before adding fresh stuff. While taking it for a test drive my knock counts were just crazy and it now seems like it might be running lean, but i need some professional assistance here. Here is a log i took from a stop sign going and log starts when i shifted into 2nd to show sense thats when the knock occurs...

TIMA O2trim O2 TPS MAFS RPM KNCK
30° 133.4% 0.78V 21.2% 163.5Hz 1563 4
27° 127.9% 0.60V 21.2% 144.7Hz 1344 3
24° 130.3% 0.51V 21.2% 138.4Hz 1188 8
19° 135.7% 0.55V 21.2% 138.4Hz 1250 16
19° 142.0% 0.04V 21.6% 151.0Hz 1438 16
22° 149.0% 0.59V 21.6% 163.5Hz 1625 25
19° 149.0% 0.66V 25.1% 201.3Hz 1844 24
20° 156.0% 0.59V 25.9% 245.3Hz 2031 29
18° 142.7% 0.82V 26.3% 264.2Hz 2281 32
18° 122.5% 0.84V 26.7% 283.1Hz 2469 32
18° 103.7% 0.76V 27.1% 301.9Hz 2656 31
20° 83.5% 0.62V 12.5% 220.2Hz 2813 25
27° 66.3% 0.82V 11.4% 113.2Hz 2281 2
36° 56.2% 0.70V 11.4% 69.2Hz 1844 0
33° 44.5% 0.86V 29.8% 188.7Hz 1781 0
 
cmon guys i just need to know if im just stupid and need to add some fuel from like 2K on in the low trims or somthing.
 
you could add some fuel around 2k also try a high octain fuel what are you running for fuel now i wouldnt run anyless than 91 octain if over 15psi and over 15psi less than 93 octain fuel. good luck
 
yea im running 93 octane nothing less ever! the full throttles are just fine, no knock at 15psi. The low throttle is just very tempramental. I added 5% to 2K-4K low and it doesnt knock as bad but still gets up to 6 rarely so im gonna add like 2% more i think and see what happens. anyone else?
 
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