http://xbox360cheats.info Over G Fighters cheat: Alternate Functionssome Planes Have... Feed 2012-05-24 en http://xbox360cheats.info/Over-G-Fighters/Xbox-360/21899.html
For example, press D-pad Left to enable Stealth mode for the F-22 Raptor.

The F-15 C Eagle has a Super Search Radar mode that's also accessed that way. The F-117 Nighthawk has a Night Vision mode that's accessed that way as well. Note: In order to activate Setalth mode on the F-22 Raptor, you cannot have the afterburners on. Also, do not make heavy turns and you cannot have your navigatoin radar on. When Stealth mode is engaged, the word "Stealth" will appear below the graphic for total missiles remaining on your heads up display.
If you're using the true cockpit view, the letters LPI will appear in the middle of the heads up display. If the word "Stealth" is in soild letters, you're in Stealth mode. If "Stealth" is blinking, it indicates that Stealth mode is engaged, but other planes can see you, because you you have your afterburners or navigation radar on.]]>