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Ford Truck Club Forum > GARAGE TALK > Garage Talk: Shop Class 101



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  #1  
Old March 22nd, 2010, 03:14 PM
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Default How-To: Gotts Mod for 2009 / 2010 (w/ pics)

Hey guys, if you're like me and have a 2009/2010 F150 and are a little hesitant to rip it open and figure out how to do the infamous Gotts mod on your truck, I'll save you some time. I've heard several people offer different ways of doing the mod on the '09/'10, but I think this one is the easiest.

Time: about 10 minutes.

Difficulty: novice

What you'll need:
  • Flat blade screwdriver OR 8mm wrench/hex head
  • 13mm wrench

1) Remove the negative terminal from the battery with either the flat blade screwdriver or the 8mm wrench.

This resets the engine computer so it will recalibrate with the increased airflow..and prevents other bad things that may happen when messing with the electrical equipment.


<img src="http://www.fordtruckclub.net/forum/photopost/files/1/1/1/gotts_mod_1.jpg" alt="Gotts Mod 1" />

2) Remove the Mass Air Flow Sensor Cable and Loosen the nearby hose clamp (8mm / flat-blade bolt).

<img src="http://www.fordtruckclub.net/forum/photopost/files/1/1/1/gotts_mod_2.jpg" alt="Gotts Mod 2" />


3) Release the 3 clips that hold the top of the air filter box and remove the assembly from the rest of the intake.

<img src="http://www.fordtruckclub.net/forum/photopost/files/1/1/1/gotts_mod_3.jpg" alt="Gotts Mod 3" />


4) Remove the two 13mm bolts holding the lower part of the air filter box to the truck.

<img src="http://www.fordtruckclub.net/forum/photopost/files/1/1/1/gots_mod_4.jpg" alt="Gots Mod 4" />

5) Remove the lower portion of the air filter box by pulling it strait up. At this point it is held in by just two plastic nubs resting in rubber grommets (see second picture down).

BE CAREFUL NOT TO RIP THE COOLANT HOSE WHEN YOU PULL OUT THE ASSEMBLY. IT WILL ALL OF A SUDDEN JUST COME OUT. YOU'VE BEEN WARNED.

<img src="http://www.fordtruckclub.net/forum/photopost/files/1/1/1/gotts_mod_5.jpg" alt="Gotts Mod 5" />

Rubber grommets that are holding the box in:
<img src="http://www.fordtruckclub.net/forum/photopost/files/1/1/1/gotts_mod_6.jpg" alt="Gotts Mod 6" />

<img src="http://www.fordtruckclub.net/forum/photopost/files/1/1/1/gotts_mod_7.jpg" alt="Gotts Mod 7" />

6) Remove the snorkel from the air filter box. Do this by pressing down on the inside tab of the snorkel while pulling from the outside.

<img src="http://www.fordtruckclub.net/forum/photopost/files/1/1/1/gots_mod_8.jpg" alt="Gots Mod 8" />

7) Put everything back the way it came out and you're done! Very simple, nothing that can't be undone if need be.

The snorkel you'll pull out:

<img src="http://www.fordtruckclub.net/forum/photopost/files/1/1/1/gotts_mod_9.jpg" alt="Gotts Mod 9" />

Like I said, the whole process shouldn't take more than about 10 minutes. To be honest, I haven't noticed much of a difference in throttle response or power, but so far I have noticed around 1.5+ more MPG in town.

Last edited by DIXIE FIX; March 22nd, 2010 at 03:27 PM. Reason: Hosted all the pictures here at FORDTRUCKCLUB
  #2  
Old March 22nd, 2010, 03:16 PM
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thanks a ton for the post. Please intrduce yourself if you have time. I also saved all your pictures to my account and hosted them here.


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Last edited by DIXIE FIX; March 22nd, 2010 at 03:27 PM.
  #3  
Old March 22nd, 2010, 03:53 PM
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Great Post!!
And like Dixie said...please head on over to the introduction thread and tell us a little about yourself and your truck!

Matt

2007 F-150 FX4



I say try, if you never try you can never succeed.



  #4  
Old March 22nd, 2010, 06:21 PM
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Great play-by-play post!

BATES

"If you see this in your rear view mirror.........MOVE!"
Banks & PHP Powered
4wheels are for guys who can't drive with 2


  #5  
Old March 22nd, 2010, 06:50 PM
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am I safe in assuming, the snorkle was removed... and you are now left without a direct connection to the fender well ?


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  #6  
Old March 22nd, 2010, 07:28 PM
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Quote:
Originally Posted by jsoko View Post
am I safe in assuming, the snorkle was removed... and you are now left without a direct connection to the fender well ?
most of the time the snorkle is removed and replaced with a piece of PVC. This is because the snorkle necks down and causes restrictions, the PVC is one true diameter all the way through.


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Old March 23rd, 2010, 08:23 AM
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Quote:
Originally Posted by DIXIE FIX View Post
most of the time the snorkle is removed and replaced with a piece of PVC. This is because the snorkle necks down and causes restrictions, the PVC is one true diameter all the way through.

great informative post with pics
DiXie, I understand the concept of the Gotts/Ghetto Mod
so is there a step missing
or does the '09/'10 not allow for this PVC spool piece to be installed

if so the answer to my question is yes
allowing under hood air as well as fender air to be introduced into the air box
maybe there needs to be a revision to the post/pics if a spool piece can be added
as in the Gotts mod for eariler years, the trimming/shaving down of the spool piece to fit the opening in the fender well is a time consuming PITA but is a necessary part of the modification

I'm not trying to be a PITA, but I want our uninformed readers to
"Know the Rest of the Story" the whole truth
Paul Harvey 09/04/18-02/28/09


For Those Who Fought For It...
Freedom Has A Taste The Protected Will Never Know.












  #8  
Old March 23rd, 2010, 10:54 PM
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Loved the play by play. That makes it all easy for a thimble headed, single BB brain celled, fart smeller er smart feller like me.

Got a thought for the posse.. and it expands on Mr. Dixie's post.

The snorkel is designed as a venturi - nozzle. It is creating a flow restrictive area between the intake of the nozzle opening and the outlet of the nozzle opening. Removing that restriction and adding a free flowing filter is where you get the additional air for the additional and increased efficient use of air/fuel in turn giving you the increased mpg due to good old HP (combustion management) sense. I am curious about one thing - the side holes on the nozzle - some type of stabilization at different flow rates perhaps.

you'll see in a second or so the reason why i didn't take the air flow into the filter area yet.

In creating the high pressure zone inside the nozzle at the smallest opening you actually force feed air at a higher rate of pressure and slightly lower (initially) volume. The increase in flow actually drags in more air (siphoning effect) and allows the incoming air to expand inside the filter housing on the inlet side of the filter.

Sort of like your thumb over a garden hose. The water (incoming air) at the outlet of the hose (the outlet side of the venturi-nozzle) is at a higher pressure after the restriction and you force the flow out farther.

This rush of air flow and pressure hits the filter inlet before the filter and it is now naturally expanding due to temperature and pressure changes. (nothing to hold it in a pressured state and i don't want to consider comparing volumetric differences with temperature and pressure effects at different rates/pressure/temps cuz I'm already being anal - someone tell the old guy to shut the heck up! 'Guys' chime in.)

The real thought is - why did they design it that way? the answer is simple - after market sales of modification parts is where the money is. They can design all this and do for an increased price on the window sticker but why would they do that when we, the backyard mechanics of the globe, will spend billions of dollars on aftermarket add ons. In that one aspect alone, it helps the economy and allows the passing of the burp torch held by beer guzzlers everywhere to burp unquantifiable songs in huge spouts of foam everywhere (even out our noses - c'mon you did it too)

Changing the air flow and the restrictive paper filter design to accommodate the now free flowing air to pass through a high flow filter is just smart and besides we now have knuckle cut bragging rights for our beer drinking song burping right of passage.

Remember it just ain't good enuff to cram more in if it can't get out. That would create excess back-pressure inside the motor.



What we leave behind are our words and our deeds. Nothing else really matters.






Last edited by HawaiianF150; March 23rd, 2010 at 11:16 PM.
  #9  
Old March 24th, 2010, 08:13 AM
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"I See said the Blind Man to the Deaf Mouse"
never though of the Venturi Effect, dang those Italian Physicist; Good Call Hawaii
Q=v1A1=v2a2
p1-P1= Volumetric Flow Rate

thus removeing the Snorkel (? restricted flow) is a bad move due to the fact that the flow of air caused by the negative pressure of the intake and Snorkel/Venturi is a miniature Super Charger to the air box/filter
as in Bernoulli's principle of Fluid dynamics,compressible flows like gases p+q=Po
therefore adding more CFM's than if the Snorkel were to be removed
but as Hawaii said "backyard mechanics of the globe, will spend billions of dollars on aftermarket add ons".
or as my dear old Dad said "son ya gotta be a little smarter than the things your messen with"


For Those Who Fought For It...
Freedom Has A Taste The Protected Will Never Know.













Last edited by JSoko; March 24th, 2010 at 08:18 AM.
  #10  
Old March 24th, 2010, 11:16 PM
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Jsoko -- you're to the T. after the math i can see the reasoning for the holes on the side. its for low end flow, counters the loss of ram flow induction and stablizes low flow and turbulence.

best part is when the differences are negated by the free flowing filter change out - add to that the "de-" baffling action that is introduced when a straight tube is substituted for the corrugated and chambered one.

your dad has the internal voice you hear when one eyelid is raised!

if it looks like duck - smells like a duck - chases you like a duck -- it surely ain't no frog.



What we leave behind are our words and our deeds. Nothing else really matters.







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