Aftermarket Intake Manifold (Renntech)
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Aftermarket Intake Manifold (Renntech)
Stumbled on this at the Festivals of Speed. This is the newest upgrade on the C74, no info on power gains.
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Thanks Howard. Are those also new throttle bodies and upper intake manidfold? It addresses the shortcomings of the small intake box and pretty cool that new air scoops direct air to the cone filters. The last airbox was costly and this must be VERY costly........
EDIT: Is this an SLS style intake adapted to work on a M156? The uppers are different from the M159 but how about the upper intake manifold?
EDIT: Is this an SLS style intake adapted to work on a M156? The uppers are different from the M159 but how about the upper intake manifold?
Last edited by Sincity; Nov 14, 2011 at 11:04 AM.
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From: Central Florida
2014 Audi RS7
Thread Starter
MBWorld Fanatic!
Joined: Oct 2008
Posts: 1,521
Likes: 3
From: Central Florida
2013 Chevy 427 Torch Red
Thanks Howard. Are those also new throttle bodies and upper intake manidfold? It addresses the shortcomings of the small intake box and pretty cool that new air scoops direct air to the cone filters. The last airbox was costly and this must be VERY costly........
EDIT: Is this an SLS style intake adapted to work on a M156? The uppers are different from the M159 but how about the upper intake manifold?
EDIT: Is this an SLS style intake adapted to work on a M156? The uppers are different from the M159 but how about the upper intake manifold?
That is the first thing I thought when I saw it. The SLS motor sits much lower in the frame affording room for the big air boxes up front but this is an interesting approach. The reps weren't saying much about it I assume because it is still an R&D product.
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Mike,
Nope, no Renntech or Carlsson. Mine will be a true ram air hood with nothing coming from inside the engine compartment where the hot air resides.
Thats all I'll say for now. Stay tuned. 
I'm not sure Renntech or Carlsson will improve the air flow of the stock intake. The actual flow and volume has never been the problem, just how we get the air to it. No one is boasting HP increases? I wonder how they get past the ECU runner changeover(short vs long runner). I still don't like taking hot air from inside the engine compartment but thats just me.
Nope, no Renntech or Carlsson. Mine will be a true ram air hood with nothing coming from inside the engine compartment where the hot air resides.
Thats all I'll say for now. Stay tuned. I'm not sure Renntech or Carlsson will improve the air flow of the stock intake. The actual flow and volume has never been the problem, just how we get the air to it. No one is boasting HP increases? I wonder how they get past the ECU runner changeover(short vs long runner). I still don't like taking hot air from inside the engine compartment but thats just me.
Last edited by Dads C63; Nov 15, 2011 at 10:53 AM.
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Mike,
Nope, no Renntech or Carlsson. Mine will be a true ram air hood with nothing coming from inside the engine compartment where the hot air resides. Thats all I'll say for now. Stay tuned.
I'm not sure Renntech or Carlsson will improve the air flow of the stock intake. The actual flow and volume has never been the problem, just how we get the air to it. No one is boasting HP increases? I wonder how they get past the ECU runner changeover(short vs long runner). I still don't like taking hot air from inside the engine compartment but thats just me.
Nope, no Renntech or Carlsson. Mine will be a true ram air hood with nothing coming from inside the engine compartment where the hot air resides.
Thats all I'll say for now. Stay tuned. I'm not sure Renntech or Carlsson will improve the air flow of the stock intake. The actual flow and volume has never been the problem, just how we get the air to it. No one is boasting HP increases? I wonder how they get past the ECU runner changeover(short vs long runner). I still don't like taking hot air from inside the engine compartment but thats just me.
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Mike,
Nope, no Renntech or Carlsson. Mine will be a true ram air hood with nothing coming from inside the engine compartment where the hot air resides. Thats all I'll say for now. Stay tuned.
I'm not sure Renntech or Carlsson will improve the air flow of the stock intake. The actual flow and volume has never been the problem, just how we get the air to it. No one is boasting HP increases? I wonder how they get past the ECU runner changeover(short vs long runner). I still don't like taking hot air from inside the engine compartment but thats just me.
Nope, no Renntech or Carlsson. Mine will be a true ram air hood with nothing coming from inside the engine compartment where the hot air resides.
Thats all I'll say for now. Stay tuned. I'm not sure Renntech or Carlsson will improve the air flow of the stock intake. The actual flow and volume has never been the problem, just how we get the air to it. No one is boasting HP increases? I wonder how they get past the ECU runner changeover(short vs long runner). I still don't like taking hot air from inside the engine compartment but thats just me.
I agree about the engine compartment heat, now if they had the same setup with some kind of hi temp plastic cover/box on both sides shielding the filters from engine heat it might work better.
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2013 f250 6.7 diesel
Mike,
Nope, no Renntech or Carlsson. Mine will be a true ram air hood with nothing coming from inside the engine compartment where the hot air resides. Thats all I'll say for now. Stay tuned.
I'm not sure Renntech or Carlsson will improve the air flow of the stock intake. The actual flow and volume has never been the problem, just how we get the air to it. No one is boasting HP increases? I wonder how they get past the ECU runner changeover(short vs long runner). I still don't like taking hot air from inside the engine compartment but thats just me.
Nope, no Renntech or Carlsson. Mine will be a true ram air hood with nothing coming from inside the engine compartment where the hot air resides.
Thats all I'll say for now. Stay tuned. I'm not sure Renntech or Carlsson will improve the air flow of the stock intake. The actual flow and volume has never been the problem, just how we get the air to it. No one is boasting HP increases? I wonder how they get past the ECU runner changeover(short vs long runner). I still don't like taking hot air from inside the engine compartment but thats just me.
MBWorld Fanatic!
Joined: Feb 2003
Posts: 5,983
Likes: 21
From: Vegas and Vancouver, BC
.
Mike,
Nope, no Renntech or Carlsson. Mine will be a true ram air hood with nothing coming from inside the engine compartment where the hot air resides. Thats all I'll say for now. Stay tuned.
I'm not sure Renntech or Carlsson will improve the air flow of the stock intake. The actual flow and volume has never been the problem, just how we get the air to it. No one is boasting HP increases? I wonder how they get past the ECU runner changeover(short vs long runner). I still don't like taking hot air from inside the engine compartment but thats just me.
Nope, no Renntech or Carlsson. Mine will be a true ram air hood with nothing coming from inside the engine compartment where the hot air resides.
Thats all I'll say for now. Stay tuned. I'm not sure Renntech or Carlsson will improve the air flow of the stock intake. The actual flow and volume has never been the problem, just how we get the air to it. No one is boasting HP increases? I wonder how they get past the ECU runner changeover(short vs long runner). I still don't like taking hot air from inside the engine compartment but thats just me.
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C63
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
