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FD3S: RE-Amemiya Rear "Street" Diffuser. New mold* Slightly redesigned.

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FD3S: RE-Amemiya Rear "Street" Diffuser. New mold* Slightly redesigned.

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Old 10-07-17, 05:00 PM
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FD3S: RE-Amemiya Rear "Street" Diffuser. New mold* Slightly redesigned.

Hey Guys,

Just wanted to give an update. Sometime early in the year (2017) we decided to improve fitment and create a new mold for the street diffuser, so it is less hassle for any potential customer trying to figure out the best way to install this. We added more material in common problem areas and redesigned the passenger side of the rear diffuser so it covers more area. Less chance of having gap issues with the new version.

Some people found the old version or authentic RE-Amemiya version a bit tricky to fit in a way to minimize the gaps. We simply redesigned it so there's less to figure out.

There is an old thread on the street diffuser if anyone wants to check it out:

https://www.rx7club.com/shineautopro...618785/page25/

Current Prices:

FRP $350
Carbon (plain or twill weave carbon) $700

Shipping is $165 to the lower 48 states. Multiple diffusers can fit in one package if anyone is thinking about sharing.









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Old 10-09-17, 12:37 PM
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Oh wow! Looks killer!

Even the short comings of the original were rectified.

Kudos for taking the time to improve on something that was already the best in the market!

If anyone in or around the Detroit Metro area wants one - I'm placing my order and can drive a little ways to meet up.
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Old 12-04-17, 06:51 PM
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Any chance of a New Years Group Buy?
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Old 12-29-17, 08:12 PM
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Which rear bumpers is this compatible with? I have a stock ‘93 bumper now, but may want to go with something else down the road.
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Old 01-04-18, 03:07 PM
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is it compatible with feed rear quarter panels?
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Old 01-05-18, 09:50 AM
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Any tips on mounting this?

Could you talk about how you mounted?
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Old 05-01-18, 01:21 PM
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Received my new better fitting FD rear diffuser back in March. Waited for spring weather to arrive before installing it.
Then waited for warm weather to paint it satin black. It is installed with with black zinc phosphate screws.

It looks nice except the two areas of poor fit????

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Old 05-01-18, 02:21 PM
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i have the same RB muffler and have the same issue. emailed Ken and this is what he communicated.

"Those are the transition points which are a bit tricky. It doesn (not sure if ken meant to say does or doesn't) require some 3m double sided tape.

For the left side, you can hand sand the edge of the area of the diffuser before it transitions in. However, you have to be careful not to sand too much. I would do 1mm at a time.

For the right side, I would try one more screw directly right above the muffle where there is sort of a "bridge" on the diffuser. That part has no mounting support, so another screw there definitely helps. I would try a little bit more sanding on the transition point for the right side. Take off 1mm at a time. Once enough material is taken off, it should sit right where it needs to be."

I didn't bother with it and left as is.

Let me know if you decide to fix and how you fixed it.
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Old 05-01-18, 03:43 PM
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I added screws on both of those side to cover the gap
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Old 05-01-18, 03:46 PM
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Left it as is because the gap as about 1/8". Using screws to pull it in would also cause buckling near it.
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Old 05-17-18, 10:18 AM
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im running into an issue where it seems like when the diffuser is attached to the mounting points in front of the gas tank the left side of the diffuser dont want to sit in correctly. I may just cut it off straight across where it moutns to the gas tank standoffs and get the fender sides sitting nice, then attach it via metal straps or something. if that makes sense lol. I did remove my gas tank awhile ago, maybe the straps aren't in the oem placement exactly, maybe that could be it?
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