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D3 - Engine Bay Everything under the bonnet

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  #1  
Old 8th April 2018, 02:48 PM
Snowball Snowball is offline
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Cool D3 S8 intake manifold replacement

I own a 07 S8 5.2 V10
Planning to Twin Turbo it therefore i Need to know if i was HYPOTHETICALLY speaking replace my tank looking intake manifold with any aftermarket fabricated two single aluminum replacements or maybe 2 racing RS2 intake manifold assemblies since the stup is almost the same.
Would they fit?
I tried the RS6 unit but its a completely different assembly starting with the grooves of the gasket
Any feedback would be appreciated
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Old 8th April 2018, 04:10 PM
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Delboy Delboy is offline
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Quite the project, Ill be sure to be following this one.

I suspect you will need to go custom.

Im surprised the RS6 manifold doesn't mate up.
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Old 8th April 2018, 04:38 PM
Snowball Snowball is offline
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Well the RS6 lower plenum surface is grooved and requires a set of 10 seals to attach, while the S8 has a flat surface where a gasket is inserted for the lower plenum of the intake.
Again, any thoughts or suggestions are welcome
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Old 8th April 2018, 10:17 PM
daandaman daandaman is offline
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I will also do a forced induction install in the future. After investigating, I came to the conclusion that the stock intake manifold is actually great and offers enhanced performance over the rs6 and Lamborghini/S8 intake designs, that is with the flaps working. No need to change it as it isn't an "upgrade".
You'll have to be able to tune the stock ECU, I'm working on that.

I am worried that there isn't enough space to fit nice big turbochargers and decent flowing manifolds in the s8... Haven't had the engine out so no clue

Last edited by daandaman; 8th April 2018 at 10:20 PM.
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Old 9th April 2018, 12:03 AM
Snowball Snowball is offline
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I have plenty of room since its a swap
And we managed to run the car 100% on a stand alone ECU powered by Motec technologies
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