WARNING: This page is about a different car, the 2013 Acura MDX, 2012 Acura MDX, 2011 Acura MDX, and 2010 Acura MDX. However, it is still accessible from the selected car via links, so may be relevant.
After removing the subframe mounting bolts and the front subframe stiffener mounting bolts, be sure to replace them with new ones.
Fig 1: Front Subframe Assembly With Torque Specifications