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Dialing it in on 104/93 octane mix. Take a look.

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8urv8

20+ Year Contributor
158
4
Nov 29, 2002
Dover, Delaware
Here's a log from last night. The timing was advanced a bit and I played with the fuel a little. I've still got some room left to pull some more fuel out since you can see I'm at around 11.0 through most of the run. The car feel's strong as hell! Take a look at the 70-90 times.

I do, however, have a couple of question's. Should I leave the fuel where it is and add more timing or leave the timing where it's at and pull some fuel out to lean it out a little more? Also, you can see the miss in my log as soon as I hit full boost. Could that be spark blowout? This only happen's when doing a 3rd gear pull and tonight was the first it has ever done this. I cannot replicate this by doing a 1st thru 4th gear pull. I'm running bpr8es gapped at .28 but I'm thinking about going back to the bpr7es cause I believe the 8's are a little too cold for my setup.
 

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I'm a bit surprised nobody has replied with any insight as to what that misfire in my log may have been. Like I said, It only happened a few time's when doing a 3rd gear pull starting at 2,000 rpms and really lugging the motor. WOT runs from 1st thru 4th had no misfire at all. I guess it must have been the gremlins.
 
Yea, it sounds like either a plug was acting up or you may have been arcing from the plug wires some where. Mine will do this when colder especially if i'm leaving the house without fully warming her up. Then once the motor's fully warmed up it goes away. Also mine only does this at low RPM's while lugging the motor around 2 - 2.5k RPM. I just write it off partially as the tune and partially accounting for how these motors like to run.
 
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