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      05-27-2020, 05:02 PM   #23
dfwashere
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Mine fit great. Didn't need to bend any lines.
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      05-28-2020, 10:25 PM   #24
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Quote:
Originally Posted by JNoSol View Post
Quote:
Originally Posted by tbone28 View Post
On the OEM setup, there is a felt box on each end that sits lower than the main tray. I don't see that on the MPorium version. What is the purpose of that felt box? aerodynamics?
It has nothing to do with aerodynamics, if anything the Mporium piece is more aerodynamic as it's flat. You do need to bend the hard power-steering line up a little (it won't hurt anything, supposed to be bendable). This ensures the hard line doesn't touch the new piece.

I can think of a few reasons why the OEM is like that:

(1) The OEM central piece is held by these stupid steel cable with nuts, it's super annoying. The side pieces hang down to match the center piece for easy access to the hanging bolts and nuts. Mporium don't require these hanging cables, which is a huge relief.
(2) The OEM hangs down to be a "feeler" component, warning you not to drive further if you're close to a tall obstacle. However, the OEM cracks so easily so that is useless.
(3) OEM piece is designed to be assembled quicker, no drilling or eyeballing to fit.
It actually forces air down for less wheel drag and is a bit of aero in fact.
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      05-30-2020, 07:23 AM   #25
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Quote:
Originally Posted by Alpha///M View Post
Which is the steering line in this pic that needs bending? This is one of those installs that you hardly see, but feel good about doing ����
This line right here, push it up so it doesn't touch the tray. This photo here the line is touching the tray. It's bendable.
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      05-30-2020, 07:26 AM   #26
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Quote:
Originally Posted by Scrippy View Post
It actually forces air down for less wheel drag and is a bit of aero in fact.
If you say so, it feels fine at 140mph. 80% of the trays at this age are either cracked, broken, or punctured which don't serve much of an aerodynamics purpose so keep replacing them with the $400 felt every 2yrs if you prefer.
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      05-30-2020, 12:17 PM   #27
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Quote:
Originally Posted by JNoSol View Post
Quote:
Originally Posted by Scrippy View Post
It actually forces air down for less wheel drag and is a bit of aero in fact.
If you say so, it feels fine at 140mph. 80% of the trays at this age are either cracked, broken, or punctured which don't serve much of an aerodynamics purpose so keep replacing them with the $400 felt every 2yrs if you prefer.
Yeah it's so minimal and really only usable at high speeds but this is just one of the little engineering parts that makes BMW appeal to us. Look at any 3 series car and they have these but made of rubber. If you take all the little things they do, you get a real fun car.
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      05-30-2020, 05:16 PM   #28
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Quote:
Originally Posted by JNoSol View Post

It looks like this undertray makes the bottom middle part of the bumper flat and loses its round shape. That kind of sucks.

From what I can see, the turner skid plate is made with a curve that keeps the shape of the bottom of the bumper
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      06-04-2020, 06:09 AM   #29
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Quote:
Originally Posted by M4_GTS View Post
It looks like this undertray makes the bottom middle part of the bumper flat and loses its round shape. That kind of sucks.

From what I can see, the turner skid plate is made with a curve that keeps the shape of the bottom of the bumper
Minor detail, and assuming they both do the job well, deansbimmer contributes to this forum with technical expertise and sure helps out a lot of folks with advice and recommendations on repairs.
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      06-04-2020, 01:22 PM   #30
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I perfer this Mporium tray over the turner one.

The Turner tray attaches to the frame, what would happen if you bottom out your car? Instead of scraping the tray up, you might even the damage the frame rails.

The shape of Mporium tray doesn't affect aerodynamic whatsoever. I have it on my car and I've gone well above 230km/hr countless times at the track down the straight and the car was super stable.
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      06-04-2020, 01:27 PM   #31
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Based on the oem design it appears to be more for oil cooler flow with the center portion and drag reduction with the outer portions, rather than anti-lift/stability.
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      06-04-2020, 01:51 PM   #32
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still don't understand the cost with these. 400 seems very hight for a thin metal tray that completely flat with bolted edged used to hold window seal to make the opening for the oil cooler. Material wise someone can reproduce this for under 100 dollars. The simular produce purchased for my z was 189 dollars shipped, water jet cut and perfect fitment. the term M tax is real.
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      06-11-2020, 11:47 PM   #33
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Quote:
Originally Posted by Properstyle View Post
still don't understand the cost with these. 400 seems very hight for a thin metal tray that completely flat with bolted edged used to hold window seal to make the opening for the oil cooler. Material wise someone can reproduce this for under 100 dollars. The simular produce purchased for my z was 189 dollars shipped, water jet cut and perfect fitment. the term M tax is real.
Yep. I play around with both my cars (also drove a camaro), and modding a Chevy is way cheaper.

That said, glad I found this thread. I've destroyed this part twice now. How much is the Turner one?
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      06-12-2020, 07:53 PM   #34
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I just installed my mporium tray this week. If you take your time on the install it will turn out really clean and smooth.
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      06-19-2020, 03:56 PM   #35
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Quote:
Originally Posted by Properstyle View Post
still don't understand the cost with these. 400 seems very hight for a thin metal tray that completely flat with bolted edged used to hold window seal to make the opening for the oil cooler. Material wise someone can reproduce this for under 100 dollars. The simular produce purchased for my z was 189 dollars shipped, water jet cut and perfect fitment. the term M tax is real.
It's not thin metal--it's about an eighth inch thick, the fabrication and finish is top notch, and the design is clever. I had no qualms with the price.
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      06-19-2020, 10:30 PM   #36
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Anyone have experience with both the Turner and Mporium undertray. I hear good things about the Turner but is it worth another $100+?
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      06-22-2020, 03:52 PM   #37
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Turner's bolts to the frame. While that might sound neat, the problem is when/if you do scrape you're potentially going to have the frame attachments bend. I have the mPorium tray, and it flexes with the bumper and doesn't hang nearly as low. I could have scored the turner for the same price with a discount I have. If Colter's tray was $100 more I'd still make the case to buy his.
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      06-22-2020, 03:54 PM   #38
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The only question I have for the community is, has anyone mounted this in conjunction with a gt4 style lip? I mainly want to make sure the fit is still good and the brake ducts found on most gt4 lips still fit through the openings. I'm tempted to just get a cheap plastic eBay gt4 lip and fit it up.
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      06-23-2020, 08:38 PM   #39
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Anyone install this on an SC E9x. I am wondering if this will interfere with the pump that sits in the right front corner.
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      06-23-2020, 09:02 PM   #40
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Quote:
Originally Posted by irokwrx View Post
Anyone install this on an SC E9x. I am wondering if this will interfere with the pump that sits in the right front corner.
No issues with clearance on mine.
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      06-24-2020, 08:06 AM   #41
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Quote:
Originally Posted by M4_GTS View Post
It looks like this undertray makes the bottom middle part of the bumper flat and loses its round shape.
This is intentional and is part of how the ground clearance is increased so much.

Quote:
Originally Posted by Properstyle View Post
still don't understand the cost with these. 400 seems very hight for a thin metal tray that completely flat with bolted edged used to hold window seal to make the opening for the oil cooler. Material wise someone can reproduce this for under 100 dollars.
But you can't. If you want 100% USA materials, made 100% here instead of China, that cost is passed onto the customer. Even in our volume production of 100+ pcs per batch we cannot make them to our quality level for that cheap. If you want to DIY a homebrew solution for your own car that's fine, but most peoples time is worth more.

Quote:
Originally Posted by butte2butte View Post
The only question I have for the community is, has anyone mounted this in conjunction with a gt4 style lip? I mainly want to make sure the fit is still good and the brake ducts found on most gt4 lips still fit through the openings.
It's not a problem. The GT4 brake duct is in the same plane as the tray and does interfere, so there is some clearance trimming required if you wish to use ducting for the brake cooling.

Quote:
Originally Posted by irokwrx View Post
Anyone install this on an SC E9x. I am wondering if this will interfere with the pump that sits in the right front corner.
It works on all systems currently on the market. Some intercooler pumps may require their mountings moved upwards, but only if they were not installed according to the SC manufacturers instruction. ESS, VF, HARROP, all fit and clear without issue.
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      06-24-2020, 08:20 AM   #42
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Quote:
Originally Posted by Route 16 View Post
my cables are twisted to hell by a shop, I see where it's supposed to mount on the OP post but I do hate those cables.
Due to popular request back in R&D stage, we provided the holes for cables to be installed, but we don't use them when we install the trays here at our shop. Since the tray increases ground clearance and sits higher up than the felt panels, the cables are too long once installed and have to be bunched up.

The original felt panels "balloon" at high speed as engine bay pressures increase. The cables prevent the original panels from blowing down and tearing at those pressures. Since our tray is rigid aluminum (and due to the way it mounts) those cables no longer serve a purpose and can be omitted if preferred.

We have been working on our website and now have a way to order online, directly.
https://mporiumbmw.com/product/mpori...ent-2008-2013/
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      06-24-2020, 10:18 AM   #43
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Quote:
Originally Posted by deansbimmer View Post
Quote:
Originally Posted by M4_GTS View Post
It looks like this undertray makes the bottom middle part of the bumper flat and loses its round shape.
This is intentional and is part of how the ground clearance is increased so much.

Quote:
Originally Posted by Properstyle View Post
still don't understand the cost with these. 400 seems very hight for a thin metal tray that completely flat with bolted edged used to hold window seal to make the opening for the oil cooler. Material wise someone can reproduce this for under 100 dollars.
But you can't. If you want 100% USA materials, made 100% here instead of China, that cost is passed onto the customer. Even in our volume production of 100+ pcs per batch we cannot make them to our quality level for that cheap. If you want to DIY a homebrew solution for your own car that's fine, but most peoples time is worth more.

Quote:
Originally Posted by butte2butte View Post
The only question I have for the community is, has anyone mounted this in conjunction with a gt4 style lip? I mainly want to make sure the fit is still good and the brake ducts found on most gt4 lips still fit through the openings.
It's not a problem. The GT4 brake duct is in the same plane as the tray and does interfere, so there is some clearance trimming required if you wish to use ducting for the brake cooling.

Quote:
Originally Posted by irokwrx View Post
Anyone install this on an SC E9x. I am wondering if this will interfere with the pump that sits in the right front corner.
It works on all systems currently on the market. Some intercooler pumps may require their mountings moved upwards, but only if they were not installed according to the SC manufacturers instruction. ESS, VF, HARROP, all fit and clear without issue.
@deansbimmer which piece would you trim? The lower part of the bumper where the ducts fit up into, or the tray?
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      06-24-2020, 02:07 PM   #44
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Quote:
Originally Posted by butte2butte View Post
@deansbimmer which piece would you trim? The lower part of the bumper where the ducts fit up into, or the tray?
The tray is trimmed back to clear the brake ducts. See attached photos of a similar install:
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