Aftermarket Intake Manifold (Renntech)
MBWorld Fanatic!
Joined: Aug 2010
Posts: 2,493
Likes: 3
MB
I agree with Dads.
An unsealed/open filter area sitting in the engine compartment is neither a proper cold air intake or Ram air.
In respect to the ECU and wires that connect to and control the original 2 stage variable length intake manifold, I guess the wires just get bundled and zip tied out of the way since now there is nothing to connect them to.
This to me is the real significance being overlooked here. With this Renntech setup is the replacement of the stock variable length type of intake manifold in favour of a fixed runner length, high RPM design. Really this Renntech prototype manifold style is just like what is used on the SLS M159, Mercedes V12 in the Zonda, BMW M, Ferrari and others.
From the photos it does not look like they have incorporated telescoping variable length velocity stacks in there. And it looks like they are using SLS throttle bodies.
Anyway, I think everything looks well done except the filters sitting openly in the engine compartment. Same with the painted blue SLS manifold that Carlsson? is selling.
It will be interesting what the dyno charts, track times and user opinions are with this manifold choice on the M156 engine cars. Despite the different camshaft profiles, will the power curves still look a little more SLS like? Perhaps with this manifold and a good set of headers the SLS M159 camshaft profiles will work more favourably?
Of the potential negatives, how about the likely drop in low-end torque with this manifold design combined with our cars that are heavier than the SLS.
I am very curious to see how this manifold performs...
In the photos notice the difference in the manifold runner style between the stock M156 and the M159 and Renntech design.
In the M156 photo you can see the little black flaps that open and close runner length and the shafts they are mounted on.
More info here of you are interested
http://en.wikipedia.org/wiki/Intake_manifold
An unsealed/open filter area sitting in the engine compartment is neither a proper cold air intake or Ram air.
In respect to the ECU and wires that connect to and control the original 2 stage variable length intake manifold, I guess the wires just get bundled and zip tied out of the way since now there is nothing to connect them to.
This to me is the real significance being overlooked here. With this Renntech setup is the replacement of the stock variable length type of intake manifold in favour of a fixed runner length, high RPM design. Really this Renntech prototype manifold style is just like what is used on the SLS M159, Mercedes V12 in the Zonda, BMW M, Ferrari and others.
From the photos it does not look like they have incorporated telescoping variable length velocity stacks in there. And it looks like they are using SLS throttle bodies.
Anyway, I think everything looks well done except the filters sitting openly in the engine compartment. Same with the painted blue SLS manifold that Carlsson? is selling.
It will be interesting what the dyno charts, track times and user opinions are with this manifold choice on the M156 engine cars. Despite the different camshaft profiles, will the power curves still look a little more SLS like? Perhaps with this manifold and a good set of headers the SLS M159 camshaft profiles will work more favourably?
Of the potential negatives, how about the likely drop in low-end torque with this manifold design combined with our cars that are heavier than the SLS.
I am very curious to see how this manifold performs...
In the photos notice the difference in the manifold runner style between the stock M156 and the M159 and Renntech design.
In the M156 photo you can see the little black flaps that open and close runner length and the shafts they are mounted on.
More info here of you are interested
http://en.wikipedia.org/wiki/Intake_manifold
The pictures are very informative too.
MBWorld Fanatic!
Joined: Sep 2008
Posts: 2,177
Likes: 14
From: Central Florida
2014 Audi RS7
Stock US OEM BOx tops:
ROW Box lids
Much larger and better intake tract. This may be opld news but I've never had them both to compare side by side.
Last edited by Dads C63; Nov 17, 2011 at 04:12 PM.
MBWorld Fanatic!
Joined: May 2008
Posts: 1,601
Likes: 14
From: dfw
'10 C63
brabus has a different one on their tt m156... i wonder if anyone else other than brabus will be able to tt our cars
http://www.bimmerboost.com/content.p...700-horsepower
http://www.bimmerboost.com/content.p...700-horsepower
Junior Member
Joined: Aug 2011
Posts: 37
Likes: 0
NA
I agree with Dads.
An unsealed/open filter area sitting in the engine compartment is neither a proper cold air intake or Ram air.
In respect to the ECU and wires that connect to and control the original 2 stage variable length intake manifold, I guess the wires just get bundled and zip tied out of the way since now there is nothing to connect them to.
This to me is the real significance being overlooked here. With this Renntech setup is the replacement of the stock variable length type of intake manifold in favour of a fixed runner length, high RPM design. Really this Renntech prototype manifold style is just like what is used on the SLS M159, Mercedes V12 in the Zonda, BMW M, Ferrari and others.
From the photos it does not look like they have incorporated telescoping variable length velocity stacks in there. And it looks like they are using SLS throttle bodies.
Anyway, I think everything looks well done except the filters sitting openly in the engine compartment. Same with the painted blue SLS manifold that Carlsson? is selling.
It will be interesting what the dyno charts, track times and user opinions are with this manifold choice on the M156 engine cars. Despite the different camshaft profiles, will the power curves still look a little more SLS like? Perhaps with this manifold and a good set of headers the SLS M159 camshaft profiles will work more favourably?
Of the potential negatives, how about the likely drop in low-end torque with this manifold design combined with our cars that are heavier than the SLS.
I am very curious to see how this manifold performs...
In the photos notice the difference in the manifold runner style between the stock M156 and the M159 and Renntech design.
In the M156 photo you can see the little black flaps that open and close runner length and the shafts they are mounted on.
More info here of you are interested
http://en.wikipedia.org/wiki/Intake_manifold
An unsealed/open filter area sitting in the engine compartment is neither a proper cold air intake or Ram air.
In respect to the ECU and wires that connect to and control the original 2 stage variable length intake manifold, I guess the wires just get bundled and zip tied out of the way since now there is nothing to connect them to.
This to me is the real significance being overlooked here. With this Renntech setup is the replacement of the stock variable length type of intake manifold in favour of a fixed runner length, high RPM design. Really this Renntech prototype manifold style is just like what is used on the SLS M159, Mercedes V12 in the Zonda, BMW M, Ferrari and others.
From the photos it does not look like they have incorporated telescoping variable length velocity stacks in there. And it looks like they are using SLS throttle bodies.
Anyway, I think everything looks well done except the filters sitting openly in the engine compartment. Same with the painted blue SLS manifold that Carlsson? is selling.
It will be interesting what the dyno charts, track times and user opinions are with this manifold choice on the M156 engine cars. Despite the different camshaft profiles, will the power curves still look a little more SLS like? Perhaps with this manifold and a good set of headers the SLS M159 camshaft profiles will work more favourably?
Of the potential negatives, how about the likely drop in low-end torque with this manifold design combined with our cars that are heavier than the SLS.
I am very curious to see how this manifold performs...
In the photos notice the difference in the manifold runner style between the stock M156 and the M159 and Renntech design.
In the M156 photo you can see the little black flaps that open and close runner length and the shafts they are mounted on.
More info here of you are interested
http://en.wikipedia.org/wiki/Intake_manifold
One thing which surprises about Carlsson design is the very high HP for a NA engine (636 hp). I have not seen the details of the mods (anybody got more info? what headers they use?), but I wonder how much low end torque they had to give up to achieve this hp.
Does anybody have the hp / torque curve for the Carlsson RSR?
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Joined: May 2008
Posts: 1,005
Likes: 1
a durr
Very interesting, thank you.
One thing which surprises about Carlsson design is the very high HP for a NA engine (636 hp). I have not seen the details of the mods (anybody got more info? what headers they use?), but I wonder how much low end torque they had to give up to achieve this hp.
Does anybody have the hp / torque curve for the Carlsson RSR?
One thing which surprises about Carlsson design is the very high HP for a NA engine (636 hp). I have not seen the details of the mods (anybody got more info? what headers they use?), but I wonder how much low end torque they had to give up to achieve this hp.
Does anybody have the hp / torque curve for the Carlsson RSR?
MBWorld Fanatic!
Joined: Mar 2007
Posts: 2,155
Likes: 14
From: Sydney, Australia
Vath ML63 Brabus C63 SL63 CLK63BS C63BS
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Junior Member
Joined: Aug 2011
Posts: 37
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NA
Also, sorry for off topic, but did you find any RHD long tube headers?
Last edited by MicheleC; Nov 28, 2011 at 08:18 PM.
MBWorld Fanatic!
Joined: Mar 2007
Posts: 2,155
Likes: 14
From: Sydney, Australia
Vath ML63 Brabus C63 SL63 CLK63BS C63BS
Maverick1975, did you consider going for higher HP while keeping the engine naturally aspirated on one of your 63s? From one of your recent posts, I believe you were going for another Weistec install for another car, so just wondering. (Just saw your updated signature, seems you got them all S/C now!)
Also, sorry for off topic, but did you find any RHD long tube headers?
Also, sorry for off topic, but did you find any RHD long tube headers?
Last edited by Maverick1975; Nov 29, 2011 at 07:02 AM.
