New Injectors = KR?
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New Injectors = KR? Ever since I changed to a set of flow matched FRPP red top 30#s, Ive been getting some nasty KR. I tuned these via the spreadsheet from 40psi to 58 psi. Ive since straightened out my VE table with my wideband. Why and I getting spots of 8* or even 12* of KR? Is there something else that needs to be adjusted other than IFR?
Thanks!
Thanks!
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Originally Posted by RedHardSupra
i'd guess one of them isn't working right. did you scan for misfires on each cylinder? does it run rough?
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Originally Posted by joecar
Post a log chart image.
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Originally Posted by RedHardSupra
did you try to see if it goes away with 100octane? if it goes away then it's real knock, if it doesn't, then it's fake. how much timing you got in these cells?
Ported 241 casting heads, 232/234 112 +2 cam.
SCR: 10.844
DCR: 8.191
Here's my timing:
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The plot thickens. I took the car out for lunch today. 10 minute drive to moes southwestern grill. On the way there, I had spots of 6 and 8 degrees KR. However on the way home I couldnt get a single instance of KR, no matter how hard i tried. Perhaps it has something to do with wether or not the car is up to operating temperature? FWIW, I rarely if ever have even a single degree of KR at WOT all the way up to 28 degrees. I dont hear any weird exhaust rattles that recently came to be, so i dont know what would trigger false KR. Ive also run two tanks (from different gas stations) with the same issue, so i dont think it was bad gas.
Ill log my ride home and see how it does, if it shows the KR, ill post my current bin and log for anyone interested to check out.
Ill log my ride home and see how it does, if it shows the KR, ill post my current bin and log for anyone interested to check out.