Flow Bench Test of kd4crs/Power Hungry/Gotts Mod

[incogmeo]

From another website .... "The 2004s and early 2005s were known to come from the factory in a near lean condition. Any increase at all was enough to lean them out further. Troyer did some dynoing a long time ago and posted the results. Any additional air on these should be done with care and preferrably with custom tunes."

So my questions are:

1. Is this true ?

2. Is it safe to do the air intake mod to a stock 04 5.4 with a K&N drop in filter and no tuner ?

Thanks.