Today I installed my TwinZ rear bumper diffuser. I follow the instructions which were very useful. It was a long undertaking. Took me 6 hours from start to finish. The most difficult part was to attach the diffuser to the bumper frame. I had to twist my fingers / hands / arms to reach the bolts and tight them. Another thing is I was expecting the need to trim the diffuser to keep my tow hooks but the diffuser fitted nicely without trimming. The tow hooks touch the diffuser but no need to trim.
