Pulled the front O2 and the truck starts. Needs a new cat.

Thanks for all the suggestions

Vehicle was towed in, cranks but no start. Checked fuel -- 55psi when key is turned on, drops to 45psi when cranking and flow is good. Checked spark -- Has nice white spark at plugs Injector Pulse -- Checked with noid light and is working on both banks. Compresson -- 150 psi , pretty darn good and f...