It's not a phrase coined by Lil Jon, but an older one that may be traceable back to World War II pilots.
Note: the P-38 in the article and this pic is a "J" model.
It's also not a phrase coined by Accepts' "Udo"
The Phrase ‘Balls to the Wall’ Comes From Warplanes, Not That Other Thing
Where did the phrase "balls to the wall" come from? Its origins stretch back many decades before Lil Jon, it turns out.
www.thedrive.com
Note: the P-38 in the article and this pic is a "J" model.
It's also not a phrase coined by Accepts' "Udo"