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The Terminator
Engine/Tuning
Self Tuning With SCT Pro Racer
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<blockquote data-quote="03cobra#2" data-source="post: 16453911" data-attributes="member: 52057"><p>Did a little more datalog going and I'm trying to wrap my head around these spark tables. I hear people say that the ecu will choose the lower of the 2 tables between borderline knock and mbt. </p><p></p><p>It was a little cooler out today so I did a couple wot pulls. With Iat2's at 110 I saw 20* of timing at 6300 rpm. Which sounds about right. In my borderline knock and mbt table it's set for 19* @ 5000 rpm and 21* at 6500 rpm max load row. I'm pretty satisfied with what my spark is doing at wot. </p><p></p><p>Now where i get confused is what spark table is the ecu pulling from and what is acceptable spark advance for E85 at part throttle / medium acceleration. When I datalog spark source during acceleration I'm at spark source 2 mostly and sometimes spark source 1 for a brief time here and there. I'm thinking spark source 1 is the mbt table and spark source 2 is the borderline knock table? If anyone has some clarification on how this works that would be great. </p><p></p><p></p><p></p><p>Sent from my Pixel 2 XL using Tapatalk</p></blockquote><p></p>
[QUOTE="03cobra#2, post: 16453911, member: 52057"] Did a little more datalog going and I'm trying to wrap my head around these spark tables. I hear people say that the ecu will choose the lower of the 2 tables between borderline knock and mbt. It was a little cooler out today so I did a couple wot pulls. With Iat2's at 110 I saw 20* of timing at 6300 rpm. Which sounds about right. In my borderline knock and mbt table it's set for 19* @ 5000 rpm and 21* at 6500 rpm max load row. I'm pretty satisfied with what my spark is doing at wot. Now where i get confused is what spark table is the ecu pulling from and what is acceptable spark advance for E85 at part throttle / medium acceleration. When I datalog spark source during acceleration I'm at spark source 2 mostly and sometimes spark source 1 for a brief time here and there. I'm thinking spark source 1 is the mbt table and spark source 2 is the borderline knock table? If anyone has some clarification on how this works that would be great. Sent from my Pixel 2 XL using Tapatalk [/QUOTE]
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