You can permanently modify a psionic power you know with a metapsionic feat.
Prerequisites: Ability to manifest psionic powers, any other metapsionic feat.
Benefit: You choose one power known to you to become permanently modified by one metapsionic feat you know. The cost of modifying your chosen power with metapsionic feats is reduced by 2 power points (to a minimum extra cost of 0 power points). When you manifest the modified power with that metapsionic feat, you must still obey any restrictions of that feat (for example, expending your psionic focus). Once a metapower is created by taking this feat, it cannot be changed. The metapower can be used normally with other metapsionic feats you know.
Special: You can gain this feat multiple times. Each time you do, you choose a power—either one you have already modified or another power you know—and reduce the metapsionic feat cost of that power by 2 power points for a different specific metapsionic feat.
Source: Complete Psionic, page 63.