has anyone seen this before? I was searching the net for something else and just ran across this, so I thought someone might be interested in it... I have never seen this front diffuser/ undertray before...http://www.junauto.co.jp/products/ae.../index.html?en

 

I like it. I would like it even more if it were already shaped for an fd. I'd be worried about screwing it up. I didn't see a price either.

 

Knowing how Japanese companies overprice their parts by an insane amount, I wouldn't be surprised if Jun Auto charges $400 for that undertray. Why spend that much when you can get one from Shine Auto for 1/4 that price, after all its just a flat piece of FRP.

 

If it's just a flat piece of FRP then you should be able to make it yourself right?? :rolls eyes:

 

UMMMM!!! that is the biggest gimmick I have ever seen. Every part of it that they claim is creating DF is actually doing the opposite.

1 vent to the underside = positive pressure = lift
2 blocking off the the wheel wells and keeping the air under the car to create more DF....UNTRUE, wheel wells can actually be made into very good exits for air and the whole key to front DF via GA on a non tunel car is to get as much air out from under the car as soon as possible.

Better off putting a airdam on the front or flat bottoming the car and running a good siezed splitter than buying that POS.

 

It's shown with an aftermarket front bumper so fitment would be questionable.
I'm missing the significant advantage of this over OEM, especially for an R1/R2.

 

i thought of just buying a sheet of carbon fiber and cutting it to shape... im not sure on what shaping would be best for the front end of a car. i've seen a lot of rear diffusers and would like to buy one of those in the future aswell.

 

I'd never buy a generic piece like that. They're all over Japan BTW.

I'm still holding out for Damian's track-tested undertray if he ever gets around to completing it...

 

^ how much to import one ramy?

 

Are you serious? I hope you're joking, b/c that's a LOT of money to pay for something that isn't even pre-fitted...

 

i thought you were referring to something that acually fuctioned and fitted. geez dont be hatin

 

Oh Damian's? He's a forum member here in the US. No reason to import anything

The only undertrays I'd import are the Mazdaspeed ones. They're the only ones I know of (so far) that have any actual aerodynamic functioning/testing to them, although C-West makes a simple undertray you can make yourself w/ some sheet aluminum for about 1/10th of the cost

Don't get me wrong; I'd love to get parts for peeps, but I don't want them wasting their money, ya know?

~Ramy

 

The undertray on Damians track car is still my favorite. I didn't hear he was making them for sale. I would be interested.

 

However, the problem with "pre-fitted" ones is that they can still have fitment problems depending on what front bumper is being used (if that wasn't the case, everyone would still be able to use the OEM undertray with every bumper). Damian's piece may work fine for his MS bumper but may have fitment problems where it needs to be trimmed for others. I, personally, would rather have an oversized piece that needs to be cut to size. That way I know it will fit rather than one which leaves a few openings here and there because its too small (from fitting a different bumper).

I would be interested to know what the price is that JUN is charging for their piece.

 

Mahjik, Damian's test-fitting it on a few different front noses.

I'll see if I can find out how much JUN wants for their piece.

~Ramy

 

I have no doubt. However, not that Damian isn't a smart guy, but I'm sure RE-A or one of the bigger companies would have done a "perfect fitting universal undertray" if it was possible by now.

IMO, going oversized and having people cut it to fit their specific car is a better idea. At least that way you know exactly what you are getting. Otherwise, you end up with tons of threads like "The fitment is crap. I actually had to do some real work and trim it".