Air Induction Systems
What is a C.A.R.B. E.O. number?
- Most AEM intake systems either carry an exemption or have
been submitted to the California Air Resources Board for an
Executive Order (CARB EO) number, exempting them from the prohibitions
of California Vehicle Code (CVC) 27156, which states that you
cannot modify your car in the area of the emission control system.
The C.A.R.B. E.O. number allows you to legally use the AEM intake
system on your car.
What’s the Difference between a Cold Air System
(CAS) and a Short Ram (SRS)?
- In most cases a CAS will out perform a SRS. AEM emphasizes
developing power in the lower to mid range of the power band,
since this is the area of the power band typically used in daily
driving. A CAS is typically longer and places the air filter
outside of the engine bay to achieve ambient inlet air temperatures.
A SRS places the air filter under the hood and uses a shorter
inlet pipe than the CAS. In some cases, the SRS is preferred
over the CAS due to inlet tract length tuning. The power advantage
gained by using the correct diameter and length of tube negates
the advantage of cooler inlet air in these cases. In these instances
AEM only offers SRS because there was no advantage to using
Will an AEM air intake void my new car warranty?
- NO. The only time this can happen is from improper installation
that causes damage to a vehicle system. If a service technician
denies your warranty claim ONLY because the car is modified
with an AEM intake system and the vehicle system failure was
not a direct result of the installation and use of an AEM intake,
please refer him to the Magnusson Moss Warranty act.
What does the soft mount do and how important is it?
- The majority of AEM air intake system designs mount to a vehicle
in two locations. One mounting location is to the engine at
the throttle body and the “cold" or filter end of
the inlet pipe mounts to the body of the car. The movement of
the engine on the engine mounts allows it to rock inside the
engine bay, so we compensate for engine motion by using a soft
mount that provides a flexible link for the inlet pipe between
the engine and the body of the car. If you do not install the
soft mount properly the inlet tube may break at the bracket
weld and void the warranty on the intake system. Our instructions
provide a detailed diagram of proper installation of the soft
mount, and are viewable from the search results page for each
I have an engine swap. Which intake should I use?
- AEM manufactures hybrid intake systems for some Honda and
Acura models with popular engine swaps. These intakes are a
direct fit and fully warranted. For cars with other engine swaps,
we do not recommend using our intake because of potential fitment
problems. If you elect to purchase an AEM intake for your engine
swap application, we cannot guarantee proper fitment and any
modifications to the intake system will void the manufacturer
What is the warranty on my AEM intake?
- AEM warrants that its intake systems will last for the life
of your vehicle. AEM will not honor this warranty due to mechanical
damage (i.e. improper installation or fitment), damage from
misuse, accidents or flying debris. AEM will not warrant its
powdercoating if the finish has been cleaned with a hydrocarbon-based
solvent. The powdercoating should only be cleaned with a mild
soap and water solution. Proof of purchase of both the vehicle
and AEM intake system is required for redemption of a warranty
claim. This warranty is limited to the repair or replacement
of the AEM part. In no event shall this warranty exceed the
original purchase price of the AEM part nor shall AEM be responsible
for special, incidental or consequential damages or cost incurred
due to the failure of this product. Warranty claims to AEM must
be transportation prepaid and accompanied with dated proof of
purchase. This warranty applies only to the original purchaser
of product and is non-transferable. Improper use or installation,
use for racing, accident, abuse, unauthorized repairs or alterations
voids this warranty. AEM disclaims any liability for consequential
damages due to breach of any written or implied warranty on
all products manufactured by AEM. Warranty returns will only
be accepted by AEM when accompanied by a valid Return Merchandise
Authorization (RMA) number. Credit for defective products will
be issued pending inspection. Product must be received by AEM
within 30 days of the date RMA is issued.
AEM DRYFLOW Air Filters
What makes the DRYFLOW filter better than oiled cotton-gauze
- DRYFLOW filters have several features that make them better
than cotton-gauze. Typical DRYFLOW air filters have a better
filtering efficiency than cotton-gauze filters. Also the cleaning
process doesn't include oil for DRYFLOW air filters. This removes
the mess and question of how much oil to put on the filter.
What is the DRYFLOW filter made of?
- The DRYFLOW filter is made from a single-layer of pre-pleated
polyester synthetic filter media with a nylon-reinforced internal
cage for added structural rigidity. For conical filters, the
base and cap are made from polyurethane, which will not shrink
or crack. Our Brute Force HD Diesel oval filters use deep pleats
and Zytel 15% GF plastic for the cap and base. This construction
assists in the overall structural rigidity (oval Diesel DRYFLOW
filters use 12.5 square-feet of media for maximum flow, approximately
Will the DRYFLOW filter affect my warranty?
- DRYFLOW air filters will not void your vehicle warranty.
How long will a DRYFLOW filter last?
- If you clean and maintain your DRYFLOW filter, it will last
for the life of your vehicle.
Does AEM make panel DRYFLOW filters for factory air
- Yes, DRYFLOW Performance Panel Filters are available for some
models. Use our product search to find one for your vehicle.
I have a competitor intake or AEM intake with an oiled
filter. Can I upgrade to the DRYFLOW filter?
- Whether you own an AEM intake system or competitor intake
system, we encourage you to upgrade to the DRYFLOW air filter.
The DRYFLOW delivers one of the highest filtration efficiencies
available in an aftermarket performance air filter, and because
you do not have to oil it, all the guesswork associated with
servicing an oiled cotton gauze filter is eliminated. Click
here for a list of DRYFLOW cone shaped filters with dimensions.
To determine the part number of the DRYFLOW air filter on any
air intake, enter the air intake number in our search by part
Where can I buy a DRYFLOW air filter?
- Use our dealer search to find an authorized AEM dealer near
you or contact us for assistance.
How well does the DRYFLOW filter flow?
- We design our DRYFLOW filters to exceed the flow requirements
for the size of the engine that we designed the air intake for.
Rest assured that we have taken flow into account for all of
our intake designs and our DRYFLOW filters will deliver more
than adequate flow for your vehicle.
Does the DRYFLOW filter flow as well as cotton-gauze
- Our DRYFLOW filter flows nearly as well as cotton gauze elements.
In order to increase flow we add more pleats that are ¼"
deeper than much of the competition. Keep in mind that the DRYFLOW
air filter typically has a higher filtration efficiency than
a cotton-gauze air filter. It provides great filtering and provides
air flow well beyond the requirements of your engine.
How often should I clean the DRYFLOW filter?
- Frequency of cleaning for your DRYFLOW filter will depend
on the conditions in which you drive. As a rule, we recommend
that you clean your filter a minimum of every 30,000 miles,
inspect it during oil changes and regular service intervals,
and clean it if it appears to be reaching its dust holding capacity.
If you live in particularly arid, dusty climates or venture
off road, we recommend cleaning the filter every 3,000-5,000
How long does it take to clean the DRYFLOW filter?
- The DRYFLOW filter media is hydrophobic, which is a fancy
way of saying it does not soak up water. Under normal conditions,
cleaning will take about an hour. We recommend that you follow
the instructions that are included in our intake systems and
DRYFLOW filter replacement filter kits (CLICK HERE for air filter
Is it necessary to oil my DRYFLOW filter?
- NO! The DRYFLOW filter NEVER requires filter oil to trap dirt.
It typically filters at a higher efficiency than oiled filters
and blocks harmful dirt particles.
Will frequent cleanings affect the DRYFLOW filter's
- No. The DRYFLOW filter’s polyester synthetic media can
endure repeated cleanings without significantly degrading the
media’s filtration capabilities. If you clean and maintain
it properly it will last for the life of your vehicle.
What can I do if I am on the trail and need to clean
my DRYFLOW air filter?
- DRYFLOW filters for all of our intake systems exceed the flow
requirements of the engine for extended service and we highly
recommend cleaning them per the instructions in our Filter Cleaning
System (Part number 21-110). If you feel you must clean the
filter and do not have a cleaning system available to you, we
suggest hitting it several times to knock the dirt off of the
filter pleats and servicing your filter per AEM specifications
as soon as possible. If it is absolutely necessary, use fresh
water to rinse mud or heavy dirt off the element from the inside
out to ensure the dirt does not wind up inside the filter, and
clean the filter per AEM specifications as soon as possible.
Can I use a different type of cleaning solution on my
- To ensure optimum performance and filtering capabilities,
use AEM’s Filter Cleaning Solution (part number 21-110)
or a mild multi purpose cleaner and follow our cleaning instructions.
What is the warranty on my DRYFLOW air filter?
- AEM warrants that its DRYFLOW Air Filter will last for the
life of your vehicle. See our warranty page for details.
What is a DRYFLOW Air Filter?
- The AEM DRYFLOW air filter is constructed of gradient non-woven
polyester fibers that are several layers deep, and as the name
implies, it is a very efficient air filter that does not rely
on oil to capture airborne contaminants from the inlet air stream.
The DRYFLOW air filter is not a single layer barrier filter
but rather a depth loading filter where the contaminant is captured
through several layers of fibers. For more on AEM DRYFLOW Air
Filters click here.
How do we perform filter efficiency tests?
- We use ISO 5011:2000 with ISO “A-2 Fine Dust" as
the contaminant. Southwest Research Institute performs the testing
and determines flow rate criteria based on the average flow
requirements of a typical engine on which the filter to be tested
will be used. The concentration of the contaminant introduced
into the air stream is significantly higher than what would
be encountered in normal use in order to perform the test in
a reasonable time. Typically, 2 flow rates are used for testing.
160 CFM is used for smaller displacement engines. 240 CFM is
used for larger displacement engines.
AEM Dual Chamber Induction Systems
Dual Chamber Intake does not route the filter outside of the
engine compartment. Why is my application an underhood system?
- Just as some vehicles respond better to Short Ram systems,
length and diameter of the dual chamber piping in a Dual Chamber
induction system plays a vital role in creating power. Because
of this, not all Dual Chamber systems relocate the filter outside
the engine compartment. AEM performs extensive R&D for every
application (including Dual Chamber systems), both with respect
to length tuning and inlet temperature testing. We will always
manufacture the best performing product regardless of its configuration
and do not subscribe to what the industry generally accepts
as a “method" for manufacturing performance induction
systems. We have manufactured air induction systems for 12 years,
and over that time have developed a comprehensive testing standard
that nets consistent results. In this regard, we develop Dual
Chamber systems to produce maximum power, and this does not
always mean that a Dual Chamber system will have a long runner
configuration. We pay particular attention to temperature testing
on Dual Chamber systems with short intake runner configurations.
In cases where a heat shield is necessary for keeping inlet
air temperature under control, AEM will provide a powder coated
steel, heat shield with the system.
Can I use an AEM Bypass Valve with a Dual Chamber intake?
- No. AEM Dual Chamber Induction Systems utilize a dual chamber
to create multiple frequency sound waves. The installation of
the AEM Bypass Valve would disrupt the tuning of these systems,
and in many cases the tube diameter of Dual Chamber systems
exceeds the maximum size of the AEM Bypass Valve making it impossible
Where should I install my nitrous nozzle on my Dual
Chamber inlet pipe?
- If you must install a nitrous nozzle on your inlet pipe, make
sure that it is installed on the smaller primary pipe close
to the throttle body. If you install it on the larger secondary
pipe the nitrous can get trapped in the chamber and may not
enter the inlet air stream. Ideally, the best place to install
a single fogger nitrous system when using a Dual Chamber intake
is in the throttle body plenum.
FORCE Induction Systems
is the Power Spacer and why is one not included in every BRUTE
- The Power Spacer is a plenum spacer that installs in between
the intake manifold and the throttle body. In about 5% of
our applications, we have found that increasing plenum volume
increases power. We test each system we develop with various
Power Spacer designs, and only include Power Spacers in BRUTE
FORCE intake systems when they improve performance. AEM Power
Spacers feature a smooth internal design that makes more power
and does not whistle the way spacers with screw type inlets
do. Because they do not increase performance on every application
and are designed to work specifically with BRUTE FORCE intakes,
AEM does not sell them separately and includes them in kits
when they increase power. BRUTE FORCE applications in our
search results indicate whether a system includes a spacer.
have a throttle body spacer and bought a BRUTE FORCE intake
that does not include one. Should I continue to use it?
- No. We highly recommend removing the spacer prior to installing
your BRUTE FORCE intake, as it will negatively affect the
fit of the system on your vehicle and will not improve your
the BRUTE FORCE intake a “cold air" system?
- Although it is not a cold air intake in the traditional
sense (routing the air filter outside of the engine compartment),
BRUTE FORCE intakes pull the air charge from the coolest source,
making them in essence cold air designs. Because of the heavy
duty and off road use many trucks encounter, we designed BRUTE
FORCE intakes as under hood systems to protect them from potential
damage. We use a steel heat shield when necessary to shroud
the air filter from engine heat, and perform extensive temperature
testing to ensure the vehicle is receiving an air charge of
cooler outside air.
do some BRUTE FORCE intakes not include a heat shield?
- We perform extensive temperature testing during the development
phase to ensure that the filter is in a location that will
receive a cool air charge. For some BRUTE FORCE intakes, we
found that there was no difference in inlet temperatures with
and without a heat shield during our temperature testing.
Since we do not want you to waste your money on parts that
are not necessary, we do not include a shield with these applications.
does AEM use aluminum for its intake piping?
- The issue of heat absorption with an intake system has a
degree of validity; however we have found that too much emphasis
is placed on material selection, instead of the real issue
of tuning the system. Our systems feature a unique shape and
diameter because this is what we found to make significant
useable torque and horsepower in testing. We use aluminum
to eliminate any chance of the system rusting, and it's lighter
than steel. We limit our use of plastic because this material
absorbs some of the sound energy we work to create in the
inlet duct. The rate at which air travels through the inlet
path under open throttle, when one is asking the engine for
maximum power, minimizes the effect of material heat soak,
regardless of the material.
have a body lift on my truck. Will it affect the fit of a
BRUTE FORCE intake?
- Yes, a body lift will negatively affect the fitment of the
intake unless an engine mount lift is installed to maintain
proper geometry of the engine to the chassis. Most BRUTE FORCE
intakes mount to the throttle body inlet and the chassis via
a soft, flexible mount. If the body is lifted, the mounting
points will not align correctly.
have a suspension lift on my tuck. Will it affect the fit
of a BRUTE FORCE intake?
- No. Suspension lifts do not affect engine-to-chassis geometry
and therefore will not affect the intake fitment. It will
install the same as if the truck has a factory suspension
Air Bypass Valves
Quick Tips for Air Bypass Valve installation:
- Generally, the Air Bypass Valve installs along the upper
section of the induction pipe, close to the throttle body.
Do NOT install it too close to the Inlet Air Temp sensor,
and NEVER install an air bypass valve in between a throttle
body and Mass Air Flow sensor (MAF). Be sure to check for
clearance for the width of the Air Bypass Valve during installation,
and to use the provided template that comes with your Air
Bypass Valve to remove the proper amount of material from
the induction pipe.
NEVER use an Air Bypass Valve on a forced induction vehicle
as it will damage the valve and could lead to engine damage.
I use an Air Bypass Valve on a forced induction engine?
- Do NOT use an Air Bypass Valve on engines equipped with
forced induction (turbo or superchargers). The increased flow
demands created by the forced induction could damage the valve
and lead to engine damage.
Can I plumb a nitrous nozzle into the inlet pipe before the
Air Bypass Valve?
- Placing a nitrous oxide nozzle before the bypass valve will
lead to fuel contamination of the foam spring and filter,
and degrade the integrity of the plastic valve housing due
to the extremely cold temperature of the nitrous oxide. Nitrous
CAN be used downstream of the bypass valve, either along the
inlet pipe (room permitting) or plumbed into the intake manifold
or throttle body.
should I use an Air Bypass Valve?
- The AEM Bypass Valve protects the engine from ingesting
water and hydro-locking if the filter becomes submerged in
water. Hydro locking occurs when the end of the inlet pipe
is submerged in water and the water is sucked into the engine.
Driving the vehicle in rainy conditions is not enough to cause
a problem unless the vehicle submerges enough that the inlet
end of the pipe is immersed in water. Rain impingement on
the filter will not cause a hydro lock condition.
The distance of the filter from the road dictates the level
of water that can cause damage. This distance varies with
the vehicle ride height, which is why there are no published
numbers for this measurement. We suggest taking this measurement
and keeping it in a log book, so that in the event you encounter
deep water you will know what your maximum allowable depth
is before potential submersion of the inlet pipe. All AEM
Cold Air Intake installations retain the factory splash shield
(fender liner) for filter protection and performance. Removal
of splash shield actually deteriorates performance by allowing
air heated by the pavement to enter the filter and negates
any positive pressure created in the air filter area when
the vehicle is in motion. There are some instances where there
is not enough room around the inlet pipe for adequate clearance
of an Air Bypass Valve. In these instances, we recommend installing
a Short Ram system if water ingestion is a concern.
the Air Bypass Valve cause a loss of power?
- The Air Bypass Valve may cause a slight loss in power due
to the interrupted wall section created by the internal shape
of the valve. We have found that the typical power loss is
minimal (depending on the application) in our dyno testing.
The bypass valve offers great security against hydro locking
the engine in rainy conditions. If maximum power is the requirement,
we suggest that you use the Air Bypass Valve in the rainy
season and replace the Air Bypass Valve with a coupler hose
in the summer or when racing to make a smooth section along
the inlet where the Air Bypass Valve normally installs.
is the warranty on my Air Bypass Valve?
- Advanced Engine Management Inc. warrants to the consumer
that all AEM High Performance products will be free from defects
in material and workmanship for a period of twelve (12) months
from date of the original purchase. Products that fail within
this 12 month warranty period will be repaired or replaced
at AEM’s option, when determined by AEM that the product
failed due to defects in material or workmanship. This warranty
is limited to the repair or replacement of the AEM part. In
no event shall this warranty exceed the original purchase
price of the AEM part nor shall AEM be responsible for special,
incidental or consequential damages or cost incurred due to
the failure of this product. Warranty claims to AEM must be
transportation prepaid and accompanied with dated proof of
purchase. This warranty applies only to the original purchaser
of product and is non-transferable. All implied warranties
shall be limited in duration to the said 12 month warranty
period. Improper use or installation, use for racing, accident,
abuse, unauthorized repairs or alterations voids this warranty.
AEM disclaims any liability for consequential damages due
to breach of any written or implied warranty on all products
manufactured by AEM. Warranty returns will only be accepted
by AEM when accompanied by a valid Return Merchandise Authorization
(RMA) number. Credit for defective products will be issued
pending inspection. Product must be received by AEM within
30 days of the date RMA is issued.