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Old 04-07-2014, 05:00 PM   #1
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Kadunza S54 ITB Adapter Plate Project

Been working on this for some time now and I'm finally pleased to post this up since it seems that is finally taking off in a direction I am happy with.

The basic idea is that you can purchase a set of S54 ITBs and this plate will allow you to bolt them on using all OEM parts. This way you can always get gaskets and replacement parts direct from the a BMW dealer or an OEM BMW parts distributor.

Key Benefits:

- Replacement Parts are all OEM BMW Parts (no proprietary gaskets or installation parts)
- Correct Fuel Injector Angle Placement (for Optimal Fuel Atomization)
- Affordable (average cost of a complete kit with tune & S54 ITBs should be ~$1600)
- Option to purchase just the adapter plate or in Plug & Play kits

Alpha ver.

The first plate was a bust. The injector angle and ITB angle was all wrong and the stock injector harness fit way to tight against the valve cover.
(Sorry for the crappy phone pics)

Rev. 1

So we went back to the drawing board to make sure we modeled the injector angle as close to stock S54 specification as possible.

(Maker Bot Test Model)


And we now have a worth prototype...

At the moment we are designing the throttle cable linkage / ICV mount. I will post pics once we have some. After that we will be designing a single intake plenum friendly to E36s as well as E30 24v swap cars.

After that the next phase it to mount it up to a few different cars and work with TRM to fab up some tunes.

I will continue to update the thread as it progresses.

EDIT: Please do not blow up my PM box with requests and questions right now. I promise I will keep everyone updated and post notification once they are available to purchase.

Last edited by CorvallisBMW; 04-09-2014 at 12:24 PM.
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Old 04-07-2014, 05:07 PM   #2
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for, uh, reasons.
cars beep boop
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Old 04-07-2014, 05:15 PM   #3
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Wow! Really Nice work! Always amazed to see such nice new products for our old cars!
E30 now S52
2008 Suburban LTZ (Family and TT hauler)
325xiT (Sold)

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Old 04-07-2014, 05:22 PM   #4
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Nice! I hope to see Art running this on his S52 haha!

Originally Posted by SpasticDwarf View Post
Honestly I built it just to have a place to sit and listen to Hotline Bling on repeat.
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Old 04-07-2014, 05:35 PM   #5
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Old 04-07-2014, 07:05 PM   #6
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fucking sub'd. thank you raul.


Gigitty Gigitty!!!!

88 cabrio becoming alpina b6 3.5s transplanted s62
92 Mtech 2 cabrio alpinweiss 770 code
88 325ix coupe manual lachsilber/cardinal
88 325ix coupe manual diamondschwartz/natur
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Old 04-07-2014, 07:17 PM   #7
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24V only?
1989 325iC Zinnoberrot
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Old 04-07-2014, 07:37 PM   #8
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Sweet... would be interested in just the plate and throttle bodies
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Old 04-07-2014, 08:05 PM   #9
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i recommend putting the adapter with a head and a runner on the flow bench, there are easy gains getting the transition and alignment between runner and head sorted.
the difference between a good adapter and poor one is 10-15whp. i'm not familiar with the real estate you have and other practicalities but the longer the adapter the better the transition will be. it will also make the runner volume smaller which is good when you have big throttles
89 E30 325is Lachs Silber - currently M20B31, M20B33 in the works, stroked to the hilt...

new build thread http://www.r3vlimited.com/board/showthread.php?t=317505

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Old 04-07-2014, 08:31 PM   #10
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91 Alpinweiss2 318is OBD2 S52
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Old 04-07-2014, 11:09 PM   #11
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cool project
E30 325i Touring currently under construction.
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Old 04-07-2014, 11:23 PM   #12
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Turbo M42 Build Thread :Here
I like the tuna here.
Originally Posted by lambo View Post
Buttchug. The official poster child of r3v.
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Old 04-08-2014, 09:16 AM   #13
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Old 04-08-2014, 09:23 AM   #14
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if this was available for a m20 i would be inclined to swap one into the 2002
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Old 04-08-2014, 09:25 AM   #15
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wow....definitely interested to see how this pans out
1989 325i
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