Playing with a E40 LS2 and am working on improving economy around cruise. What is to lean when it comes to cruise AFR and the only way I can see achieving this is by in the B0146 in the 30-65Kpa area at 144-176 degrees celcius IVT. Now I have gone to a factor .9 so when this is combined with the B0141 of 10.00 I get a EQ of .9 bringing the AFR to 16.40 is this to lean? Will doing this cause me any other issues in this map area when not cruising? or how do other people increase cruise economy without the lean cruise tables that we have in the aussie ls1 pcm.