Intake upgrade, now "huffing" noise at hwy speeds - Ford Powerstroke Diesel Forum

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post #1 of 7 Old 03-27-2010, 02:24 PM Thread Starter
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Intake upgrade, now "huffing" noise at hwy speeds

Earlier this month I installed the Banks Ram-Air Intake system on my 2005 6.0. Everything went smoothly and no driving problems. That is until I took it on the interstate this week and had issues when driving at 65-70mph with cruise control.

When going up an incline it sounded like the engine was huffing or trying suck more air in short spurts. It would also make this same noise when I would tap the brake pedal at highway speeds to cancel the cruise control. This problem never occurred when driving without cruise control.

On my return trip, I noticed that there were far fewer occurrences of the huffing noise on inclines but still happened at let up after tapping the brake to cancel the cruise control.

Looking for ideas or input from those experiencing the same issue.
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post #2 of 7 Old 03-28-2010, 06:13 PM
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did it sound like a chicken trying to crow with a bag over it's head kinda? i have a noise like that on mine and the tech at the local ford garage told me it may be when the turbo is spooled up making pressure and you let off suddenly the pressure has to go somewhere cuz the intake wont let it through to the cylinders so it burps back through the turbo and rattles the air box..i'm not sure if i'm buying into that yet but kinda made sense to me.
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post #3 of 7 Old 04-03-2010, 05:11 PM Thread Starter
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Not sure if it sounded as you described but I took it to a dealer and they changed the EGR valve. I go on another trip tomorrow so I'll be able to see if it was a good fix
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post #4 of 7 Old 04-24-2010, 05:37 AM Thread Starter
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Well it still has the same issue, though not quite as pronounced. I've had some discussions with some other folks who deal with diesel motors and they advised me to have the turbo and the EGR cooler checked out...so Monday the truck is headed back to the shop.
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post #5 of 7 Old 04-24-2010, 10:46 AM
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Sounds like just a turbo fart to me. I used to have the banks ram air and it would always do The huff huff huff sound when you would build boost than let off. Has nothing to do with the egr. If you still don't believe me, check your coolant temp and oil temp, if it's more tha ten degrees apart you have a egr problem. Are you still on warranty? Or are you paying you out of your pocket

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post #6 of 7 Old 04-24-2010, 10:55 AM Thread Starter
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They replaced the EGR valve under warranty so it didn't cost me a cent. So if it isn't the EGR, what causes the huffing? You said you HAD the Banks intake system. Does that mean you didn't like it?

Last edited by c17mxo; 04-24-2010 at 11:01 AM.
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post #7 of 7 Old 04-24-2010, 12:31 PM
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Well I got it when I first bought my truck thinking it would help breathe and give me more hp. But that's not the case, the stock unit will flow just fine up to 500 hp so it's pointless and you are not gaining anything with an aftermarket one, so I sold mine and threw my stocknkne back on. I put that money towards a EGR delete.

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37" FCII on 17" weld racing wheels
SCT X3 w/ Innovative tunes
Speedhut revolution gauges
5 Inch MBRP exhaust w/ 7inch tip
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