Air filter removed for drag racing? - Ford Powerstroke Diesel Forum
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Old 08-04-2012, 05:52 PM
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Air filter removed for drag racing?

Would not running an air filter affect the maf sensor operation? Im thinking there would be alot of turbulance and the maf wouldnt read correct. The reason i ask is i was thinking about removing the stock air filter to make a few track passes. I would also make a "JLT" style intake pipe from the zoodad to the turbo boot. Im not concerned with dirt at the track as most turbo drag cars dont run a filter anyhow.

What do you think?
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Old 08-04-2012, 06:02 PM
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I think it is not worth it
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Old 08-04-2012, 06:12 PM
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Originally Posted by Six0~Stroker View Post
I think it is not worth it
I agree. Run a filter.
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Old 08-04-2012, 06:23 PM
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Won't be enoigh of a difference to worry about.
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Old 08-04-2012, 06:25 PM
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Most real drag cars that don't run filters also get rebuilt every season or 20 miles which ever comes first. Keep your air filter or get something afttermarket for the track.
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Old 08-04-2012, 07:46 PM
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Air filters smooth the air. We run large filters so it wouldnt make that much of a difference. On a different note my turbo mustang picked up about 50 hp not running anything prior to the turbo. This was a high hp application though. For you, keep the filter
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Old 08-06-2012, 12:00 PM
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run a filter. and buy my barely used afe filter that works in the stock airbox if you want something that will flow real good
mike
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Old 08-06-2012, 04:38 PM
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my cousin doesnt run one, i mean its a risk either way. up to you...are you from charleston? Im in jedburg.
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Old 08-06-2012, 07:55 PM
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Originally Posted by the chad View Post
my cousin doesnt run one, i mean its a risk either way. up to you...are you from charleston? Im in jedburg.
S'ville actually, good to see a fellow powerstroker right up the road!

Im not really concerned with dirt or what not. I dont run a filter on my turbo fox but it doesnt use maf efi either. I was really just curious how the maf will respond to more turbulent air. I may do a few datalogs with and without to see how it responds.

Thanks
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Old 08-06-2012, 08:14 PM
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When the turbo is spinning 100k+ rpm's, a spec of sand with very little mass can have some serious effects.

Just think....if your compressor wheel has a diameter of 3" (wonder what they really are, but this is just a number off the top of my head.) here is the math.

2xpixradiusxrpmsx60s/1minute/(12"/ft(5280ft/mile))
2 x 3.1415 x 1.5 x 100000 x 60 / (63360) = 892mph. Thats how fast the outside of that 3" diameter wheel is spinning.

Sandblasting does some amazing things to metal, and happens at a fraction of the speed. Wonder what would happen if something large like a moth or something got sucked up.
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