Quote:
Originally Posted by joeduquette
Hey guys, anyone have problems holding power after upgrades? I have FBO, MHD stage 2+ tune, dinan springs and a 235/265 MPS4S setup. The cars feels amazing except when really punching it. The back end gets squirrelly under load, the wheels don’t spin out but it doesn’t feel planted at all. Actually feels dangerous but still kinda fun lol. I’ve ordered powerflex rear diff and subframe bushing inserts to see if that helps, if it does I’ll eventually change out the bushings to stiffen everything even more. I’ve checked my tire pressures and they were all good. Has anyone else had this problem? Thanks!
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Subframe bushing flex can cause what you are describing and so can toe changed. Look into a set of adjustable toe arms as well to take away toe changes under acceleration. You may want to consider solid vs urethane bushings.