Dual quads versus big hammer!!!...

j par said

Also one of the things that the engine builder for lwa said was mixing the race fuel in there makes the timing strap and plugs quite hard to read sometimes...
Again putting in another vote for the new AF gauge sensor..
I want to get the tune straightened out and have the correct air fuel ratio and then look for the hesitation. I don't want tune everything way out of whack trying to get rid of the hesitation...

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Yeah, I forgot to mention that I did some research and the reason why I was questioning what the ground strap looked like was that mix of race fuel.

I wouldn't worry about that too much though. At 25% as long as you know what you are looking at, it's not an issue.

I took some notes from the conversation I had, but most of it went directly over my head. I'll attempt to distill down what I was told.

What I was told happens when you mix race fuel with pump gas there is never the exact same mix of pump gas/race fuel in any cylinder at any given time.

Soooooo, when you see the scaling on the ground wire, that is different ratios of race fuel in the cylinder relative to pump gas at any given time.

That's my simple explanation of what I found.

So I wouldn't be too concerned about that.