GoFastBroncos.com

Does anyone know if they are still in business ? And if so, what is the part number for the Ford Bronco mass air unit..


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They are still kicking. Located by the Oceanside airport now.

BTW, he's selling SXS air filters as fast as he can make them. Very busy........

BDKW1 wrote:BTW, he's selling SXS air filters as fast as he can make them. Very busy........

Thanks man! I’m going to swing in there next week


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Please post up what you end up doing, Interested in doing this myself aswell

Any updates on this??

Installed one on my Bronco.


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The only thing I’d like to add or ask is - IF you happen to have one of these and are getting a dyno tune. I’d love to know do these take any power away vs the K&N variety that are out there. These sometimes I’ve heard are too restrictive for certain applications but I genuinely have no idea. My only reason to say yes is that the 6.2 Raptor version is YUGE compared to the others I’ve seen and that is only a 411 hp engine.

The one I have is 4” inlet and 4” outlet. 8” in diameter and 12” overall length. It’s rated up to 800hp. Breaths way better and way cleaner than a K&N.


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I run a AFM and have very good luck. Much cooler air charge then metal air box. It dyno's very well !

https://www.summitracing.com/parts/afe- ... /overview/

Andy Jones wrote:The one I have is 4” inlet and 4” outlet. 8” in diameter and 12” overall length. It’s rated up to 800hp. Breaths way better and way cleaner than a K&N.


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Any pics of the setup? I need this for my truck I have a bastardized setup right now to clear my desolate cage

Here's what I have.



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Nice!! I just picked mine up, and looking for install bracket ideas. Looks good, what size tires? 35...

pat_car22 wrote:Nice!! I just picked mine up, and looking for install bracket ideas. Looks good, what size tires? 35...

37’s


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the UMP above with 4" in and out and 12" long flows sub 500CFM. For a stock motor thats ok, the OE flows right around 400CFM but if a performance motor is in the future, plan now.

Id recommend this one if going custom...
https://shop.donaldson.com/store/en-us/ ... 0029/34603

80 series land cruiser also a great "OE" option at 480CFM, thats what I currently have but am looking to increase flow and filtering by moving to the donaldson above if I can package it. Real easy access too with land cruiser or donaldson.

My thoughts are this - it’s a dyno question- put on a K&N and then say a UMP size like Andy runs which seems common. I need to get my engine retuned so I just might do you all a real world test at my expense. The reason is the motor trend engine masters series and watching them test air cleaners and the surprising figures they reach. My only thing that makes me agree with Keith is the UMP filter built to fit the 10-2014 -6.2 Raptor- it’s waaaayyyy larger than you typically see. I’d just love to know if a single filter will work on about a 350hp engine or does it really need 2 or does the side need to be much larger.

I would never run a K&N other than on a street car with a carburetor. The ump is disliked by dyno guys with maf due to how the sensor gets the air to calibrate fuel delivery. A MAF makes calcs based on laminar flow across the cross section...therefore the filter assembly its hooked to should try to deliver that. If it cannot, the tuner needs to compensate for that in the table. If you have a custom build/tune and all you changed was the filter housing (which I plan to do) it should be dyno'd again if the MAF will see different flow across it so you dont have an ill running motor. If the MAF will not see different flow it should not affect it.

For a paper type tractor filter like UMP it is just not large enough in most cases and why the CFM is inadequate in addition to the air flow being turbulent so its a double whammy. The 8" dia, 12" long is rated for 250HP per their website.

I wouldn't waste time comparing an open K&N or guaze type filter to a real paper filter unless you had equal CFM filters being tested but to get equal flow, you would probably need a paper housing that was 3-4x the size of a K&N which isnt realistic based on packaging. I recall years ago asking UMP if they had a better packaging solution and his reply was "you shoulda built your vehicle with air filtration in mind" because the required air clenaer from them was so massive to get proper cfm.

The raptor UMP looks adequate sized for cfm for a raptor

I can't find the specs, but i am running a Donaldson PowerCore sold by Volant on my K&N intake tube. I haven't had any MAF related issues, and the inside of the tube stays extremely clean. No oil, rated at 99.95% efficiency.