I finnaly got my Techedge WB O2 unit setup and running. After seeing my A/F was in the low 11:1 ratio I decided to turn the boost up from 6 to 10 PSI and now I am in love with my car again. My a/f is staying line the mid to low 11:1 rang and I have even seen 10.8:1 near redline. When I dip in the throttle I see 13.0:1 to 12.5:1 and once boosted it goes into the 11's. I am really happy running this way. I feel it's a good safe tune for my LS. If anyone had a zdnye and are using it on an LS with 450's you may want to check it out. My timming is set to stock on the dist with the Zdyne pulling out .8 degree's/PSI. I may take more out for peace of mind.