My QF annular cruises in the mid 14's at cruising speeds (2700-3200rpms) and then goes to 12.5 A/F from a cruise to WOT. Then it leans out to 13.0 by the time it gets to my 5700rpm shift point.

I wonder what kind of rpms they see the annular getting rich. Maybe it is higher up in the rpm range than what I shift.

What is weird is that Zack (QF rep) recommended to me the annular DP because it was more responsive on the street. I am very pleased with his advice.


1970 YO7 A66 [Canadian Export] F8 Challenger
340 (Currently in shop for stroker assy.)