Got around to installing the 2011 control arms on my 09 STI along with the rear subframe bushings.
Control Arm Install went well considering I'm kind of a noob to mechanical type stuff. All of the bolts came off easily w/ the impact wrench.
In the future if I remove the control arms I'll disconnect the end links before jacking it up so they're not loaded.
Rear subframe bushings were super easy to do.. Jack rear up, put it on jackstands, pull the 6 bolts out, lower diff down a bit, remove washers, hammer down the tabs on the large top washers, grease up inserts, squeeze them in, put washers back on, put bolts back in, raise diff, torque down bolts.
Pretty easy.
First impressions, car feels less sloppy in the front end, the 255 tires aren't wandering around like they did before with the 09 control arms. Doesn't feel like I have to correct as much anymore, Before it felt like I was running huge oversized mud tires on the car, making the tires follow any sort of deformity in the road.
Rear end feels stiffer and more planted, it doesn't feel like the rear is shifting around too much under load now.
Anyways, the car feels a bit more predictable now.
Both seem like great upgrades for anyone with a 08-10 that has already done other suspension stuff. (in my case, rce blacks/rce sways)