BHAF (big honkin air filter) on 02 cummins - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 01-21-2009, 09:03 AM Thread Starter
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Join Date: Jan 2001
Location: Mountain Home Idaho
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BHAF (big honkin air filter) on 02 cummins

after removing the factory airbox and flat panel filter i bolted a big honkin air filter to inlet tube. the big filter is NAPA 2790 the filter is used on the bigger cummin motors and lots of equipment loaders graders dozers, big generators. its meant to be used in dirty enviroments. it works great on pickups.

the turbo is boosting sooner and harder. my fuel mileage went up 2 mpg, im averageing 15.5 mpg drivn around town. i was 13.5 thats a pretty good improvment.

havent towed anything since the filter mod so i cant say how much better it is at freeway speeds, but i soon will, i tow a 12000 pound trailer almost daily when were busy. and on acasion the backhoe thats 25k and gross trailer truck weight of 33k.

i get looks drivn around town cause its whistles just off idle and even whistle decelerating. at 2k rpm its whistle loud, like its gona suck you through the glove box.

the BHAF axle works on some chevys and fords.


Evan

89 ifs-sfa truck tranplanted in a 83 K-5 blazer offroad only rig
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post #2 of (permalink) Old 02-06-2009, 10:43 AM Thread Starter
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Join Date: Jan 2001
Location: Mountain Home Idaho
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heres the pix.

mines a wix filter# 422790
Attached Images
File Type: jpg bhaf3.JPG (40.6 KB, 2 views)
File Type: jpg bhaf2.JPG (56.6 KB, 2 views)
File Type: jpg bhaf.JPG (60.1 KB, 2 views)
File Type: jpg bhaf1.JPG (56.6 KB, 2 views)

89 ifs-sfa truck tranplanted in a 83 K-5 blazer offroad only rig
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