AFM replaced with good unit. MPG has suffered a pinch-the old AFM was leaned out a bit in an effort to compensate for other problems. The idle issue seems to be a bit better, but it's not solved completely.

When cold=no issue. When starting up when the truck has sat for a short period of time (under an hour or two), it will idle really low, but settle right back in to normal after I drive it just a bit.

I'd probably leave it alone but it's just one of those things that is frustrating me to no end. I like my vehicles to be 'just right'. Plus, I'm nervous about the smog nazi. I have a test in a few months. I think I'll get a pre test this week and see if I'm OK. I haven't had one done since the rebuild and I'm curious as to what the sniffer says about the new Street RV head and 261 cam from EB.