I'm new to the AFR but even old foggies can learn. I'm learning fast.
So far I haven't been able to get it down to the lean area and still get the performance but I'm working on it.
I had 12 inches of vacuum at idle which is what Edel. told me I should have. In tuning with the Wband I found that I was going right past the point the point where the vacuum picked up. It amounted to about 1/8 turn on the idle screws. There is no other indication from the motor , just the WB starts to go up to around 13.6-13.8. Turn the screws +/- 1/8 or more and it drops at least .5 and vacuum drops 2 inches.
The next step will be to add data logging, Map and TPS. These cost about 6 pulls at the dyno shop. However I can make as many runs as I want with the data logger. So the logger will be more valuable than the dyno for now.
I think it will be really valuable when I get to the blower. Hopefully there is someone aroun dwho has done work with the AFR and blower.
I just picked up my new blower today so it will be a reality shortly.