So here's a quick overview.
The quality of the diffuser itself was not great, but also not bad. There were some imperfections in the carbon fiber such as scratches and bubbles in the clear coat. When the diffuser was put up to the sun, you can see light pass through it in certain areas. For quality I give the diffuser an 8.5.
The fitment is perfect. It hugs the grooves of the OEM bumper all the way around. It is held to the bumper by 5 torq screws/bolts/nuts at the bottom of the bumper. It also came with double sided tape which you have to place on the diffuser yourself. I lined the tape at the top of the diffuser from one end to the other.
Only issue I have right now is the tape may not be strong enough. In some areas at the top of the diffuser you can see some lifting due to the tape not adhering strongly to the bumper/diffuser. When installing, you will probably need atleast one person to help hold the diffuser. 2 people holding the diffuser would be optimal.
testfitting
right side
left side
bolts
The gap you see is due to the shine-auto rear spats. The fujimura diffuser fits perfectly.
