What brand of intake offers the best flow/HP gains...any ideas?

 

I bought the progaurd7, 1st stg. AFE. I wished later that I had got the Scotty due to the foam unifilter that is much easier to clean, and, IMHO has better filtration.

 

Seems to me the concensis is that a cold-air intake/freer flowing exhaust won't really give you much increase in power, but it will help with turbo spool time and keeping the EGTs in check, especially when bombing.

 

Airaid claims 10HP gain by just adding their cold air intake.

 

We don't have any published numbers to quote, but the Scotty with 2-stage foam element seems to have superior flow and filtering when compared to other brands in the 04 here in the shop.

 

A lot of companies CLAIM higher HP numbers.... it's called marketing

 

I am with Dave on this one, I think the Scotty flows and filters the best of the other brands that I have tried.

Also I would not look to an air intake system for a HP gain on it's own. You may gain a few HP because of better air flow, but I wouldn't bank on it. They shine in their ability to help drop excessive EGT's not as a HP mod on their own.

Coupled with a good performance upgrade you get the best of both worlds

 

Scotty Ram Air III ......... nuff said.

 

grandblanc,
You might want to take a look at the test report from Teastand Corp on the filtering efficiency of the PG7 vs the foam filters. IE amount of dirt that passed under the same conditions, as well as the flow rate of clean air. The PG7 beat out the Uni (the company that makes the Scotty filter) pretty strong numbers to support using the PG7 is yuo want more flow and less dirt.

It's the reason we ONLY sell PG 7 filters and intake systems for the diesels.



SPICER Posted: 16 July 2004 at 3:47pm | IP Logged | Report Post

Diesel Addict

Group: Diesel Addict
Joined: 04 December 2003
Location: Milwaukee, WI
Posts: 302 The following is the complete test results. In order of rank from BEST performance to WORST in the categories of FILTERING EFFICIENCY, FLOW RESTRICTION, DIRT HOLDING CAPACITY and TOTAL DIRT PASSING THE FILTER DURING TEST.
SPICER wrote:
In the order of filtering efficiency the results are:
FILTER % Efficiency
AC Delco OE 99.93%
Baldwin 99.72%
No name filter (made for gas engine, 1/3 less pleats) 99.32%
AFE ProGuard 7 (73-10062), panel filter 99.23%
WIX/Napa 99.03%
Purolator 98.73%
Amsoil, new style 98.63%
UNI 97.93%
K&N 96.80%
Additionally, these 2 were tested using FINE test dust. The K&N was cleaned and retested, the AFE was the conical version:
K&N 89.85%
AFE Conical 92.33%


FLOW RESTRICTION FROM BEST TO WORST:
FILTER RESTRICTION in Inches H2O
K&N 4.54
Mystery bargain filter 4.78
AFE Pro Guard 7 Panel 4.99
Purolator 5.05
WIX/Napa 5.06
UNI 5.40
Baldwin 5.71
Amsoil 5.88
AC Delco 6.23
DIRT HOLDING CAPACITY From best to worst. This is the AMOUNT OF DIRT it took to create an ADDITIONAL 10 inches of water restriction. At that point the test is terminated.This indicates HOW LONG a filter is good before it must be cleaned or replaced.
AC Delco 573.898 grams
WIX/Napa 447.366
Purolator 388.659
Baldwin 388.154
UNI 374.638
Mystery bargain 350.402
AFE Pro Guard 7 232.516
K&N 211.58
Amsoil 196.323
TOTAL DIRT PASSING THE FILTER DURING THE TEST. This is how much dirt your engine will take in if you use the filter for the duration that would cause the filter to become "dirty" enough to need replacement or cleaning. The "Dirt Passing The Filter" is the dirt collected by the "Post Filter" during the test.
FILTER DIRT IN GRAMS PASSED
AC Delco 0.4 g
Baldwin 1.1g
AFE Pro Guard 7 1.8g
Mystery Bargain 2.4g
Amsoil 2.7g
WIX/Napa 4.4g
Purolator 5.0g
K&N 6.0g
UNI 7.9g
Note: The Purolator was reported to have a seal malfunction during the test and passed more dirt than it would have with a good seal.
Interesting. SPICER

Call us if you have any questions etc.

Mark @ DPPI

__________________
"03 2500 HD, Kennedy Mega Filter, STOCK PAPER AIR FILTER, Oilguard Bypass, Primrose, Baldwin Oil Filter, ARE Camper Shell, Line X Liner, Westin Nerf Bars.
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We have first hand experience with foam, cotton and paper filters in a relatively dusty area, heck this time of year we can get dust storms that close the highway. We see trucks everyday with all kinds of filters in them and you can see the amount of dirt that gets through the various filters in the intake tube especially in the Fords with the oil mist from the CCV which will collect dust if any is present. The trucks with oiled cotton filters regardless of brand always have evidence of dirt into the intake, we have even seen some with as much as a 1/16" thick layer. With the properly maintained foam, no evidence of dirt in the intake is seen. This by itself is enough to convince me of the value of the foam filter in our area. Also here is a website with a demonstration movie and data comparing different filter types http://www.trueflow.com/filtertest/high.htm

Regarding the Scotty air system, we have tried it with the cotton filter and compared it to the foam. EGTs are lower with the foam and a slight improvement in performance is noticed seat of the pants.

 

Mark,

If I remeber correctly...it was a Uni Single Stage Foam filter that was used in that test. NOT the dual stage used in Scotty's Ram Air. The AFE works great out of the wrapper...but I (or my brother, friends, and many people) have yet to be able to produce similar results once used/cleaned/used/cleaned. Maybe we are all just sheep...but it is less user friendly and IMHO does not work as well.

I have tried both.

 

Hey Mark when did you test the UNI two stage filter I use in my kits? Apples to apples buddy.

I know you are an advocate of the afe way of life but this is bordering on rediculous to sell your product.

Oil analysis results from some very particular and meticulous people that had concerns about the filtration qualities of the two layer custom design have netted EXCELLENT results from very dusty areas. Some filters had 5,000 miles, some had over 20,000 miles. I also learned that one individual works for a company that can test these filters and he was very impressed with the results. He was a critic from the start and doubted the efficiency of the two stage filter.

Highest silicon was 7 PPM. Lowest was 4PPM to date.

Can you tell me why even the single layer UNI filters I am testing are netting excellent filtration? 7PPM after 20,000 miles of dust storms, rain, snow, bugs, you name it...I hammered these filters and I did it because of reports like this...If I saw a high number for dirt/silicon in the results or if I saw dust trails in the turbo inlet hose, I would be the first person to can that product.

Scotty

 

Get'm Scotty!!!!!!

I got the popcorn.....

 

Anyone ever have any experience with using True-Flow intake systems?

 

i am changing to a bhaf fleetguard ah19037,

the way i see it is any Cummins powered Pete or Kenworth with 1 000 000 miles on it, has a fleetguard filter, not a afe, uni, k+n, or any oiled bs filter, wish i heard of the DTR before picking up the afe