*** VRP HiFlow Exhaust Manifolds (HEM) for M113 V8 ***
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*** VRP HiFlow Exhaust Manifolds (HEM) for M113 V8 ***
We are proud to announce production of our HiFlow Exhaust Manifolds (HEM) for following cars:
W211 E55 Kompressor
W211 E500
W203 C55
R230 SL55 Kompressor
R230 SL500
W209 CLK55
W209 CLK500
W219 CLS55 Kompressor
W219 CLS500
W211 E55 Kompressor
W211 E500
W203 C55
R230 SL55 Kompressor
R230 SL500
W209 CLK55
W209 CLK500
W219 CLS55 Kompressor
W219 CLS500
I have been looking into better exhaust header design for exhaust manifolds on 55s for some time now. Back in 2004 I have designed a shorty style header that is now sold by evosport. Although pretty, it's ultimate limitation on Kompressor cars is 1.625'' primaries. There is only so much exhaust that can flow through small diameter pipe.
We at VRP already offer a full-length race style 1.75'' headers, more info can be found on our website - www.vrptuning.com
This time around I had a bit more time and following criteria for the design.
1. It had to be a shorty design that will retain stock location for catalytic converters.
2. Easy, bolt in installation that can be done by a dealer or any DIY mechanic.
3. Lower price point, none of us likes to pay $5000 for headers.
4. Reliable - more complex the design, more welds it has, more chances for leaks and failures.
5. Most importantly - it has to make power.
After much trial and error, the design you see is what we are going in production with. I have tried several designs in my quest for equal length, but none could pass first four criteria. Either it required hands like a child for installation or will take a lot of labor to build, which raises the cost or will require moving engine from engine mounts for installation. Also in my past testing I also found that equal length designs work better on high-rpm, high compression, agrresively cammed engines - that are not found under the hoods of modern Mercedes and AMGs.
Final design has primary pipes of 1.75'', I moved last primary away from interferring with other three cylinders, opened up exhaust flange that mates to the exhaust manifolds to 2'' and most importantly added volume to the collector to reduce backpressure.
On a car equipped with our pulleys, 80 mm TB, K&N filters and Powerchip software we picked up 26RWHP and 23 RWTQ. The HEM allows the car to breathe on top. On normally aspirated engines, I expect the gains to be in 12-15RWHP range.
Introductory Special - $1499 - delivered, $1999 installed.
Please e-mail Victor@VRPTuning.com or call 1-887-310-4224
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Internal volume is increased from about 0.9 liters to over 1.2 liters (per manifold). A 30% increase in volume.
Also, the VRP manifolds weigh almost 50% less than the OEM ones. A few pounds here and there...
Also, the VRP manifolds weigh almost 50% less than the OEM ones. A few pounds here and there...
#24
Vadim:
Can you tell us the gauge of the steel used in the construction of these HEMs ?
Also, what is the flange thickness (thickness of surface contacting cylinder heads) ?
Do you have any warranty against cracking or leaking ? For how long ?
And to repeat phatmitzu's question - are these HEMs ceramic coated ?
Can you tell us the gauge of the steel used in the construction of these HEMs ?
Also, what is the flange thickness (thickness of surface contacting cylinder heads) ?
Do you have any warranty against cracking or leaking ? For how long ?
And to repeat phatmitzu's question - are these HEMs ceramic coated ?