Is the idle just loping a bit, or does it actually surge up and down? I am just wondering exactly what you mean by saying the idle is not smooth. I run the B-cam also and still fight off and on idle problems with it.
Just off the top of my head, make sure your TPS voltage is correct and make sure your IAB valve is clean.
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2006 Mustang GT
1990 LX
GT-40 motor 262 horsepower, 307ft-lbs (sold but forever loved)
1998 Contour SVT
Rice Haters Club Member #244
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