The pipelining is controlled typing about:config in the navigation bar, it brings up a warning, then the configuration page for Firefox / TenFourFox.

I used http://forums.mozillazine.org/viewtopic.php?f=12&t=297099 as my first reference, then adjusted more settings from Google searches.

I can't be sure but I reckon pages load more quickly now.

Hope this helps,

Cheers

Hugh