A friend of mine is considering going with an LE1 heads/cam package partially because he seems to be having valve sealing issues and figures he might as well upgrade while getting refreshed heads. The only problem is he doesn't want to shell out the cash for injectors and tuning for a while. Can you run an LE1 package on stock injectors and stock tuning without blowing something up? I'd expect a lot less power than advertised and perhaps a poor idle/drivability, but will it go lean and kill the engine?