I just replaced both my cats last week and believe that "too lean" was my problem as well, I haven't looked into any fuel pumps/controllers yet, but will be here soon. Curious how much they costed and how much dyno time is needed for the tune.
Let me know,
Alan
2001 Ironman Daily Driver... 3.5" suspension lift (OME912 springs and 1" spring spacer), ball joint flip, 1.5" front diff. drop, 33"x12.5 TrXus MT, 16x10 Eagle Alloy rims, Interceptor, PV muffler, K&N air filter, Alpine Supercharger, Bilstein shocks, and some trimming.
2000 Ironman Project LS-1 VX... very slow progress but someday....... ohhhhh someday......