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F150 Exhaust whistle #5078832
04/18/19 01:20 PM
04/18/19 01:20 PM
Joined: Sep 2018
Posts: 66
Kern Co. California
Redright9 Offline OP
Redright9  Offline OP

Joined: Sep 2018
Posts: 66
Kern Co. California
Hello,

A friend of mine has a 2011 (I believe) F150 with the 3.5l Eco boost engine. It has a Magnaflow aftermarket exhaust on it and seems to make a noise like when you are blowing over the top of a tube or straw. Its like a whistle type noise. It happens only when you are in the throttle, not towing or loaded, at about 60-70mph... When I road in it, it seems like its coming from the exhaust, is this just what the aftermarket systems sound like?

I don't think its from the engine.. anyone else have this?

Thanks.

Re: F150 Exhaust whistle [Re: Redright9] #5078841
04/18/19 01:25 PM
04/18/19 01:25 PM
Joined: Oct 2010
Posts: 872
RI
mattd Offline
mattd  Offline

Joined: Oct 2010
Posts: 872
RI
Is it coming out of the coolant bottle cap?

Check for boost leaks too.


2007 Ford F-350 4x4 6.0 PSD

ASE Master, L1
Re: F150 Exhaust whistle [Re: mattd] #5078842
04/18/19 01:28 PM
04/18/19 01:28 PM
Joined: Sep 2018
Posts: 66
Kern Co. California
Redright9 Offline OP
Redright9  Offline OP

Joined: Sep 2018
Posts: 66
Kern Co. California
Originally Posted by mattd
Is it coming out of the coolant bottle cap?

Check for boost leaks too.



Seems to come from the back of the truck (but I don't have great hearing either)... It wont do it revving the engine, has to be just the truck (not towing) and then jumping on the throttle at highway speeds. Has tons of power, so I don't think boost leaks. Plus if it happened while towing I would guess boost leaks. but only when truck is empty.

Re: F150 Exhaust whistle [Re: Redright9] #5078844
04/18/19 01:30 PM
04/18/19 01:30 PM
Joined: Sep 2004
Posts: 8,177
Marshfield , MA
andyd Online content
andyd  Online Content

Joined: Sep 2004
Posts: 8,177
Marshfield , MA
After mkt exhaust and a whistle, I know where I'd be looking. I know me. grin2


'16 Camry LE STP synth 0w20 and STP filter. the Fridge

1994 Ranger ,the Rat, 5w30 dino, STP filter

'16 Camry SE, Valvoline HM 0w20 and OEM filter
Thick oil is better grin2
Re: F150 Exhaust whistle [Re: Redright9] #5078961
04/18/19 03:02 PM
04/18/19 03:02 PM
Joined: Feb 2013
Posts: 1,395
Prospect, KY
spk2000 Offline
spk2000  Offline

Joined: Feb 2013
Posts: 1,395
Prospect, KY
Need an inline resonator to remove the high pitch whistle you are hearing.
ford is putting them on the OE exhaust systems to remove that whistle or high pitch


96 Grand Marquis 203,000 mi
01 Sable LS Wagon 163,000 mi
02 Montero 191,000 mi
03 Sable LS Sedan 73,000 mi
Re: F150 Exhaust whistle [Re: Redright9] #5078967
04/18/19 03:07 PM
04/18/19 03:07 PM
Joined: Mar 2012
Posts: 278
MO
RhondaHonda Offline
RhondaHonda  Offline

Joined: Mar 2012
Posts: 278
MO
Are you sure it’s not the turbos making noise? On my 2019 Ecoboost I can hear the turbos with the window down but there’s not a trace of a whistle when the windows are up.

Re: F150 Exhaust whistle [Re: Redright9] #5078989
04/18/19 03:31 PM
04/18/19 03:31 PM
Joined: Jul 2014
Posts: 618
Wisconsin
Srt20 Offline
Srt20  Offline

Joined: Jul 2014
Posts: 618
Wisconsin
Sounds like you are hearing boost come out the exhaust.

Re: F150 Exhaust whistle [Re: Redright9] #5079014
04/18/19 03:56 PM
04/18/19 03:56 PM
Joined: Apr 2016
Posts: 258
Florida
1978elcamino Offline
1978elcamino  Offline

Joined: Apr 2016
Posts: 258
Florida
He is in California, the truck probably went to Bubb Rubb for the exhaust. Check it out on youtube. The wistle go woo wooooo!


2018 F150 5.0
2016 Ford Fusion 2.5
Re: F150 Exhaust whistle [Re: 1978elcamino] #5079038
04/18/19 04:11 PM
04/18/19 04:11 PM
Joined: Sep 2018
Posts: 66
Kern Co. California
Redright9 Offline OP
Redright9  Offline OP

Joined: Sep 2018
Posts: 66
Kern Co. California
Originally Posted by 1978elcamino
He is in California, the truck probably went to Bubb Rubb for the exhaust. Check it out on youtube. The wistle go woo wooooo!


LOL!!! Too funny! The truck has a proper exhaust, I think it may just be "normal" for the truck with the turbos...

Re: F150 Exhaust whistle [Re: Redright9] #5079093
04/18/19 05:12 PM
04/18/19 05:12 PM
Joined: Dec 2016
Posts: 8,490
Waco, TX
Linctex Offline
Linctex  Offline

Joined: Dec 2016
Posts: 8,490
Waco, TX
You are most likely just hearing turbo noise


"The evidence demands a verdict".
(Re:VOA)"it's nearly impossible to actually know the particular additives that are in there at what concentrations."
Re: F150 Exhaust whistle [Re: Redright9] #5079122
04/18/19 05:46 PM
04/18/19 05:46 PM
Joined: Aug 2014
Posts: 178
Texas
Tdog02 Offline
Tdog02  Offline

Joined: Aug 2014
Posts: 178
Texas
Could be blow off valve. Did the previous owner put a cold air intake on it? That's a potential noise source. Also check the charge pipes for some leaks.


09 Venza 2.7 104k 5w-30 Magnatec
16 F150 2.7TT 52k 5w-30 Magnatec
Re: F150 Exhaust whistle [Re: Redright9] #5079134
04/18/19 05:55 PM
04/18/19 05:55 PM
Joined: Feb 2013
Posts: 1,395
Prospect, KY
spk2000 Offline
spk2000  Offline

Joined: Feb 2013
Posts: 1,395
Prospect, KY
Resonator vs no resonator - not sure if this helps but it might give you an idea if this is the issue

https://www.youtube.com/watch?v=uuOLY7Hp-KM


96 Grand Marquis 203,000 mi
01 Sable LS Wagon 163,000 mi
02 Montero 191,000 mi
03 Sable LS Sedan 73,000 mi
Re: F150 Exhaust whistle [Re: Redright9] #5079437
04/19/19 03:58 AM
04/19/19 03:58 AM
Joined: May 2012
Posts: 6,453
Fort Lauderdale, FL
DoubleWasp Offline
DoubleWasp  Offline

Joined: May 2012
Posts: 6,453
Fort Lauderdale, FL
My Rams sound like half of an old time steam whistle when exhaust brake is on, slowing down. Sounds like half a vacuum cleaner too.

Kinda jealous of the free breathing PSDs. They sound like near-boil tea kettles at idle, and full boil under acceleration.

If he's looking for good resonators to add to his exhaust, try the Vibrant Quiet Series. I have them in my Lincoln and it sounds exactly like stock with no cats. Modular Ford's usually sound like they are trying to cough up soup can lids without them. Great way to get rid of wanted exhaust harmonics.


07 Lincoln Navigator M1 0w-40/FU
68 Charger R/T / Supercharged 440 VR1/DBL7349
07 Ram 3500 4x4 / Cummins 6.7 /DBL7349
17 Maserati GranTurismo Cabrio
Re: F150 Exhaust whistle [Re: Redright9] #5079837
04/19/19 11:52 AM
04/19/19 11:52 AM
Joined: Aug 2011
Posts: 175
Va.
Piston_slap Offline
Piston_slap  Offline

Joined: Aug 2011
Posts: 175
Va.
It's your neighbor's kid!
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1994 Ford Econoline w/302 & 4R70W
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