did a search, and there isnt much on this topic.... so i'll do a write up.

always wanted a rear diffuser, and the one from APR looked the best for me. its functional, and isnt too much "in your face".

decided to go with CF, rather than plastic, and not sure it was the right choice.

CF, comes from a mold, and more importantly is shaped and hardens in a way that no 2 'same' parts can ever be absolutely identical. accordingly, the one i got, although it looked perfect, wasnt a perfect fit. one corner stuck out a bit, and another was crooked altogether. plus, there are small narrow gaps around the contour, where the diffuser actually touches the top part of the bumper... but when we saw this, being that this is CF, we (i went to a repair shop and put the car up on a lift) couldnt bend it , heat it up to shape it, or do much else... we ended up having to put more screws and double sided tape to hold everything together. now there are several small screws where they shoudlnt be...
i have a feeling that with plastic, it would have been a whole lot easier. although it must be said, CF just looks better in general

pics to follow
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i run the same diffuser and love the way it looks. have the same issues with the corners not coming flush with the bumper though. im prolly just going to rivit them flush when i get some free time.

 

Yeah, not the best fitment; however, it gets the job done.

 

thats what im thinking, but wont the CF crack under pressure, especially in the corners ??

 

car is filthy. i hope it would look better when car is clean.




the red arrows point to where i had to put in extra screws (ugly but they hold the corners to the bumper




fuzzy, but you can see the Diffuser clearer

 

i put the extra screws on the underside and it made it fit snug and used black touch up paint to cover the extra ones

i like the piece though except when it comes time to strap down on the dyno its a pita

 

The extra screws look fine. Just more functional feel.

I have the FPR version. Very easy to cut to shape for mufflers.

 

paint the screws so it camo's a bit....pretty nice

how much u ended up paying? PM me =]

 

I found the same issues as you when installing my CF diffuser. I used 3/16" rivets with washers and pulled as tight as I could to have everything sit perfectly flush. Perfectly flush ended up being a pipe dream. From 20 feet you wouldn't notice a thing. Standing directly over the back of the bumper you notice the gap.

 

Can the people that own this diffuser PM me the price and where they picked theirs up from? Thanks!

 

I bet if you didn't have that exhaust heat sheild on the bumper the diffuser would have fit better, seeing that's the only place you had to put screws in.