of which tuner, air
filter, exhaust system or aftermarket
intake you may already have, you need to dramatically increase
your air flow. No other aftermarket intake comes close. Bottom
line is CFM + does not make tuners, air filters or exhaust systems.
But what they do is engineer, design and manufacture the ultimate
intake for the Cummins and Powerstroke diesels.
is the CFM+ the ultimate intake manifold?
Even without a computer it’s easy to
see why the CFM+ flows so much better than the angular stock
aluminum manifold with its nearly 40% flow restriction at
the front mounting bolts. (Fig. 1)
does the CFM+ flow so much more air than the other oversized
cast aluminum manifolds in the market and maintain lower air
a number of reasons we will discuss:
very large center section of the competitor cast aluminum
manifold may look impressive but it is very bad for flow.
The inlet to the manifold from the inter cooler and the outlet
of the intake manifold into the engine are very similar in
cross-sectional area so when the center section is over three
times larger than the inlet and outlet the air flow slows
dramatically through this center section. The air flow then
is forced to speed up to exit. This causes turbulence in the
flow, leading to pressure drop or pumping losses.
competitor’s manifold is so oversized in the center
section that two of the mounting fasteners which hold the
intake to the engine had to be changed to long bolts or studs
that must pass directly through the air flow.(Fig.2) This
causes tremendous turbulence in the flow leading to additional
pressure drop or pumping losses.
can also see in the picture of the cross-section of the competitor
aluminum manifold there are two surfaces (Fig.2) protruding
down into the flow path that create recesses into the outside
surface of the manifold. These pockets allow the mounting
nuts to look good recessed on the outside but cause a big
problem on the inside where it matters. (Fig.2) These two
surfaces protruding into the air flow act to trip up or tumble
the air flow. Again this causes additional turbulence in the
flow leading to pressure drop or pumping losses.
aluminum has a much rougher surface than the advanced technology
composite CFM+ manifold. The rough interior surface of the
competitor’s cast aluminum manifold causes additional
should now be evident why there is a 44% increase in air flow
over stock and a 20% increase over the cast aluminum manifold
of the competitor. These tests were performed on a SuperFlow
model SF-1020 Probench.
to the CFM+ over the competitors cast aluminum aftermarket manifold
gives almost the exact benefit as replacing your heater grid
with a free flow spacer.
volume of air that can get stuffed into the engine is also
greatly affected by the density of the air flow. This is why
the material the manifold is made of is so important. If the
manifold’s material acts to insulate the hot under the
hood air from reheating the air flow that has just come out
of the inter-cooler that is a very good thing for maintaining
air density but if the material readily conducts heat such
as aluminum that would be bad since the hot under hood temps
would raise the air entering the engine since under the hood
temps are by definition higher than ambient or outside air
temps and heat flow is always from high to low temp. A materials
ability to allow heat to pass through it is called its Thermal
Conductivity represent by k in engineering equations. Aluminum
has a Thermal Conductivity rate or “k” of 236
W/M- °K. The CFM+ composite material’s Thermal Conductivity
rate is, 0.25 W/M-°K , which is 944 times lower.
the oversized cast aluminum intakes present more aluminum
surface area that absorbs more under the hood heat and transfers
it into the air flow.
advanced engineered composite material is high strength and
the wheel of a 2006 Dodge Ram 3500 MegaCab
line is we don't do tuners, air filters or exhaust systems.
But what we do is engineer, design and manufacture the ultimate
intake for the Cummins and Powerstroke diesels.
from black powdercoat, carbon fiber, silver, white, or red colors
for your CFM+ intake manifold.
Fastcore LLC warrants the replacement of CFM+ Intake due to
defects in material and/or workmanship according to
the following conditions: The CFM+ Intake is warranted to the
original retail purchaser only and is limited for one year
from the original date of purchase. This warranty is not transferable.
This warranty is limited to replacing the defective
Intake without charge and Fastcore LLC shall in no event be
responsible for consequential or special damages. Labor and
transportation charges are not included. Proof of purchase and
date of purchase are required to validate protection under this
limited warranty. Any Intake that has been modified or the insert
threads that have been stripped or cross threaded is not covered
by this limited warranty. This Intake is not intended for use
in any competitive event or activities. This limited warranty
is void where the Intake has been used in any of these ways.
Claims must be made through Fastcore LLC and defective part
must be returned for evaluation. This warranty is expressly
in lieu of any other warranties, expressed or implied, including
implied warranty of merchantability or fitness for a particular
purpose. This warranty gives you specific legal rights and you
may also have other rights which vary from state to state. For
warranty and return information please visit our web site at
www.cfmplus.com and click on the customer service link.