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How-To Gotts Mod


This is a discussion on How-To Gotts Mod within the Tech Info forums, part of the 11th Generation F Series : 2004 - 2008 category!
04-08 Gotts Mod I couldn't find a how-to for the Gotts mod on this forum yet so I'll make one ...



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Old 02-20-2011, 11:02 AM   #1 (permalink)
 
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Default How-To Gotts Mod
04-08 Gotts Mod
I couldn't find a how-to for the Gotts mod on this forum yet so I'll make one for everyone that hasn't seen it or done it before.
I did this on my 08 4.6L but the process is the same for the 5.4L except more pipe is needed than what I used and you just need a 3" hose clamp instead of a fernco.
For those of you who don't know, the Gotts mod takes your factory fender inlet of ~2" and increases it to 3" for better throttle response and better flow at WOT.

Materials needed:
2' piece of 3" PVC (white) plumbing pipe or ABS (black) pipe, depending on your area's availability
3" plastic to 3" plastic rubber "fernco" connector if you have a 4.6L, 3" hose clamp if you have a 5.4L

Tools needed:
screwdriver with either a slotted tip or 5/16 hex tip, both can be found on a 6in1 combination screwdriver
grinder with a grinding pad, not a cutting wheel
vise or some other way to secure the pipe while grinding
paper, sharpie and scissors to make the template


First step is remove the first say 2' of the stock air intake from the fender towards the engine for the 4.6L and from the fender to the air filter on the 5.4L
4.6L:

5.4L:
[QUOTE][QUOTE]

Second step is to remove the fender piece from the intake parts you just removed
4.6:

5.4:
[QUOTE][QUOTE]

The next few steps are the same for both engines. Take a small piece of paper and a sharpie to your truck. Hold the paper to the hole in the fender where the old piece went through and trace it onto the paper. Cut it out with scissors and check with the fender to confirm size. Recut as needed.

I also took the rubber fender seal off the intake piece to confirm size also.


Then take your template to the end of the pipe and trace it. Should look like this.


Measure and mark lines 2" from the end of the pipe, that is how much will be ground off to insert into the fender. I found it easy to ratchet strap the pipe to a bench for the grinding phase, it held it tight but allowed for easy rolling to keep grinding.


Grind the outside of the pipe down until your sharpie line is gone. Make sure to keep moving the grinder so you don't go too deep and cut into the pipe. Not a big deal if you do, you just want to keep everything as intact as possible. Looks like this when grinding is completed.


Test fit and regrind if necessary. I got mine to fit first time because my template was pretty accurate.


Next, mock up and measure how much pipe you actually need to complete the intake.
4.6:

5.4:
[QUOTE][QUOTE]

Now for connecting the pipe to the intake.
For the 4.6L, you use the fernco and tighten it to the other half of the air filter canister and your new pipe. I found it easiest to put the pipe in the fender, fernco on the pipe, then attacth the filter canister to the fernco and tighten the clamps. Looks like this when completed.


The 5.4L uses a 3" hose clamp on the intake end and then the pipe just fits into the fender snugly by itself.
[QUOTE][QUOTE]

You can paint the new PVC pipe with black paint if you choose to, I didn't since not much of it even shows anyway.
Last step, or for some of you - in between steps, grab a beer and enjoy your new mod which cost less than $15.


***All 5.4L photos were used from a thread made by JackandJanet on the F150online.com forum. ***


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Last edited by DarkShadowSTX; 02-20-2011 at 05:10 PM.
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Old 02-20-2011, 11:04 AM   #2 (permalink)
 
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Thanks for the write up dood
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Old 02-20-2011, 01:28 PM   #3 (permalink)
 
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sweet job man


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Old 02-20-2011, 03:38 PM   #4 (permalink)
 
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thanks man, steps for the 4.6l are the same on the 97-03's. i also reset my computer by disconnecting/reconnecting the negative battery cable, so that the computer would take the greater air flow into account.


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Old 02-21-2011, 06:16 AM   #5 (permalink)
 
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What are the confirmed hp / tq / gas mileage gains from this mod?


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Old 02-21-2011, 07:20 AM   #6 (permalink)
 
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I don't know if there are any confirmed numbers but I've read ~7 hp and I'm seeing at least .5 mpg better after doing the mod. By doing this mod, your truck won't run the risk of running lean like with a cai since everything is in the stock location but with just a bigger inlet.
I myself went from having a K&N CAI and custom tunes to the Gotts mod and custom tunes. My truck feels like it has more power and better mileage now than it did when I had the cai and those tunes.


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Old 02-21-2011, 08:15 PM   #7 (permalink)
 
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Good deal man.
I may have to insert this one into my "to do" list...lol


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Old 02-21-2011, 08:51 PM   #8 (permalink)
 
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Very nicely done!


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Old 03-07-2011, 09:46 PM   #9 (permalink)
 
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Nicely done man, i did this a month or so ago i also removed my silencer. on a side note i have heard of a few people using sewer pipe i guess it has a thinner wall so you can just bend it into the hole like i said just heard i used thick ass pipe and shaved it down so unsure


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