Quick, cheap and effective air intake mod

[Gary - K7GLD]

One weakness in the 2nd generation trucks involves a marginal intake air filtering system that quickly becomes a bottleneck when even relatively simple power mods are made that require more intake airflow. On my own truck, the simple addition of an Edge Comp added enough airflow demand to pull down the intake Filter Minder by two-thirds on the first RV tow up a steep Sierra grade - NOT good!

My fix at that point, was to provide a larger opening into the stock airbox to supplement the one DC provided - here's the stock box, and the stock intake opening from the passenger side fender area:





And here's the reinstalled modified box after drilling 5 2-inch diameter holes in the case:




The added holes provided enough improved airflow to prevent sucking down the Filter Minder from that point on - for even better airflow, I later also added a K&N filter that provided even more airflow.

This will undoubtedly stimulate comments concerning the K&N, but I've used them for MANY years on a wide variety of vehicles with excellent results - and there are other brands out there as well - in any event, the drilled airfilter case just by itself greatly helps avoid air starvation to the Cummins...

And when THIS mod is no longer enough, there's always the BHAF!

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White '02 Quad cab, NV5600, GAUGES! Comp, Walbro, DTT SS intake, Rip's 4 in. exhaust, Don M's 1.6's, DSS, Frantz oil bypass & fuel filters, Amsoil air filter, MOBILE Ham Radio-IC-706, 600 watt amp, '88 Kit 24 ft. 5er, 418 HP/978 Tq., 24 ft KIT 5er.

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Last edited by Gary - K7GLD : 12-31-2008 at 02:29 PM.

[Tom05]

Why not just put a BHAF on? The only reason I can see is lack of funds..........

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www.midwestdieselconnection.com

[Gary - K7GLD]

Originally Posted by MnTom

Why not just put a BHAF on? The only reason I can see is lack of funds..........

Pretty hard to beat this mod for the $$$ - and it DOES work. Mine was fine up to over 310 HP - but when I added the injector and exhaust mods, it was time for THIS:

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White '02 Quad cab, NV5600, GAUGES! Comp, Walbro, DTT SS intake, Rip's 4 in. exhaust, Don M's 1.6's, DSS, Frantz oil bypass & fuel filters, Amsoil air filter, MOBILE Ham Radio-IC-706, 600 watt amp, '88 Kit 24 ft. 5er, 418 HP/978 Tq., 24 ft KIT 5er.

[Tom05]

Yea, My BHAF was about $50 if I remember right.

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[Tom05]

Yea, My BHAF was about $50 if I remember right. BTW, here are some part numbers for the BHAF:
Fleetguard AH19037
NAPA 2790
WIX 42790
Donaldson B105006
Baldwin PA2820
Hastings AF1012
AFE 20-40044
Carquest 87790
John Deere pmah19037
Big A 93790
Caterpillar 3i0005
Fleetrite ahr819037
Luber-finer laf2531
Fram ca6818
UNI 908

Outerwear cover wr3325-105
Tom

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[Gary - K7GLD]

Thanks for posting those numbers Tom - gives guys lots of brand and source options.

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White '02 Quad cab, NV5600, GAUGES! Comp, Walbro, DTT SS intake, Rip's 4 in. exhaust, Don M's 1.6's, DSS, Frantz oil bypass & fuel filters, Amsoil air filter, MOBILE Ham Radio-IC-706, 600 watt amp, '88 Kit 24 ft. 5er, 418 HP/978 Tq., 24 ft KIT 5er.

John Deere pmah19037 Better check this number .... If you didnt personally produce your list and this is from somewhere else then the John Deere Part Number is wrong ,,, I got flamed Via Email and A guy wanted me to cover the cost of him buying the wrong part What a Nut Job... Thats Why I remember this

DM

[Monster Truck]

I got my bhaf for like 35

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95 Ext Cab SLT, Loaded, built 5spd with hurst, 3.54s, Leveled 4'' Lift 35'' Toyos, optima redtops, 4'' Straight into a 5'' bed kit with 6'' Mitres, Protech, Super B 57/66/14, Stage 2 Sticks, 3GSK, #60 Valve Springs, Stage 2 clutch, BHAF, Plateless, Boost and EGT on the pillar fuel pressure on the colum.

[engcogod]

Put a BHAF on and listen to the turbo sing that it can now breath a lot easier.. I have the same setup as above except with a blue outer wears cover...

[noplugs4me]

Thank you Gary. I just did the mod this morning on the truck. Wow I can hear it talking to me now. This is the second modification you have talked about that I have done. This one and the oil breather bottle. Thanks again -Jason

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MINE: 2001 QuadCab ShortBox 4X4 Silver AMSOIL eaAU4510 air filter TRUXEDO bed cover
WIFES: 1998 JEEP Cherokee RED
DAUGHTERS: 2006 Barbie 4-wheeler PINK
ATV: 2000 HONDA 450S Foreman

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Last edited by noplugs4me : 12-29-2005 at 10:59 AM.

[2500cummins]

Originally Posted by

John Deere pmah19037 Better check this number .... If you didnt personally produce your list and this is from somewhere else then the John Deere Part Number is wrong ,,, I got flamed Via Email and A guy wanted me to cover the cost of him buying the wrong part What a Nut Job... Thats Why I remember this

DM

DM,
You can blame me for that one, thats my original list I posted on TDR. I had my JD dealer cross the fleetgaurd # for a price and thats the # he gave me, sorry.
I'll order one up next week and see what I get

[illflem]

My mod costs less than $1 and works as well as a Scotty.
Just connect the dirty side of the factory airbox to the firewall location where a Scotty connects with 3" dryer vent or RV dump hose.

Attached Images

25501MVC-087X-med.jpg (29.7 KB, 583 views)

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Bill
'95 2500 4wd auto
'95 3500 5 speed heavy hauler
Not stock