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Old 10-03-2013, 05:53 PM
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You got that right! While I have all the confidence in the world in the work that Eric and I have done, until you put her on the road and drive her, you never really know what might happen! Thankfully, everything has been great so far!

I've been slowly creeping up the AFR in the part throttle cruise states. I started around 14:1, and that was too rich (I would get out of the car smelling like fuel). For the drive up today, I was around 15:1 I believe. I've now bumped it up to 16:1, and slowly decrease it as the map sensor shows less vacuum. I've been reading the Holley forums to get a feel for what I should target, and this seems like the right range.

As for the timing, when I'm in the pure 'cruise' state, I'm running between 40 and 45* of advance. I drop that down again to the mid-30's as I get a little less vacuum. I'm running around 25* at idle, and I jump to max of 33* at WOT. Since I haven't been on a chassis dyno yet, I'm not sure where the WOT numbers should be, but I am running a knock sensor and I can monitor it in the Holley SW. I have seen it pull timing when I could hear a ping, so at a gross level at least, it's working.

As always, I'm open to critique if you have other thoughts. I just got back from dinner (if you ever get to TMS, you must eat at Babe's Fried Chicken!) and it seemed to like the leaner cruise conditions, although I think I heard a little lean pop when I touched the throttle. The Holley SW has all sorts of adjustments for TPS and MAP enrichment, so some experimenting with those will probably take care of it.
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