How-To: Gotts Mod for 2009 / 2010 (w/ pics)
on my 07 i got 1.5 mpg and a lot more noise. but i never got around to doing the negative cable removal? wonder if it would afect it at all
Ok good, now i dont have to waste my time doing this like i did on my 05, lol!
BTW if im wrong let me know.
Unplugging the battery isn't needed. The MAF is there to automatically allow the computer to adjust to airflow changes. The air is coming in through the same source, passing by the MAF through the same tube, etc. The MAF will see the added air-flow. The only thing accomplished by disconnecting the battery is wiping the adaptive, and in a few days its going to be right back where it was. It is a recommended procedure with aftermarket intakes because they flow through a different pipe and the MAF is relocated. The computer will adjust its fuel trims (in most cases unless its a poorly designed intake and then you'll end up with either lean conditions or so much turbulence at the MAF that it can't properly adjust) with or without disconnecting the battery, just a little quicker by disconnecting.
Removing the snorkel is going to result in pulling in hot air from under the hood, negating any additional air flow, which is why it needs to be replaced with a larger than stock tube so you keep most of the added flow while still getting cold air (ie, the factory intakes are already "cold air" intakes).
Removing the snorkel is going to result in pulling in hot air from under the hood, negating any additional air flow, which is why it needs to be replaced with a larger than stock tube so you keep most of the added flow while still getting cold air (ie, the factory intakes are already "cold air" intakes).
Last edited by DigitalMarket; Sep 16, 2010 at 11:02 AM.
yeah now that i've gone through a few tanks of gas, the truck is saying that i'm getting fewer miles per gallon. i know i should hand calculate it, but i'm not noticing any gains so i'm just gonna put the snorkel back on
Unplugging the battery isn't needed. The MAF is there to automatically allow the computer to adjust to airflow changes. The air is coming in through the same source, passing by the MAF through the same tube, etc. The MAF will see the added air-flow. The only thing accomplished by disconnecting the battery is wiping the adaptive, and in a few days its going to be right back where it was. It is a recommended procedure with aftermarket intakes because they flow through a different pipe and the MAF is relocated. The computer will adjust its fuel trims (in most cases unless its a poorly designed intake and then you'll end up with either lean conditions or so much turbulence at the MAF that it can't properly adjust) with or without disconnecting the battery, just a little quicker by disconnecting.
Removing the snorkel is going to result in pulling in hot air from under the hood, negating any additional air flow, which is why it needs to be replaced with a larger than stock tube so you keep most of the added flow while still getting cold air (ie, the factory intakes are already "cold air" intakes).
Plus if you take the time to check out the dyno graphs, even with the snorkel removed (no weather stripping or the like), more HP is generated (on a tuned engine at the very least), albeit arguably negligible:
https://www.f150online.com/forums/200...ts-2009-a.html
Your link doesn't work. Also, I made no comments on the MPG issue.
I don't think I explained the adaptive in a way which came across well.
It is 100% not needed with this mod. The MAF has a range of airflow it can measure. Removing the snorkel does not change air flow characteristics at the MAF (changing the intake tube will), nor does it increase the airflow beyond what the MAF can read. Disconnecting the battery with or without making this mod will result in the same thing. Mods which increase the potential for a leaner or richer fuel mixture (this one won't) generally do need the battery disconnected. Think of it this way, a new air filter flows better than a dirty one... but you don't need to wipe out adaptive every time you change the air filter... that's one of the reason's the MAF is there... so the computer knows the air flow regardless of filter condition, snorkel removal, etc.
If you disconnect the battery you will not get a true sense of what power increases, if any, this truly gives because you've wiped out the adaptive. Dyno graphs for before and after this mod both need to wipe out the computer for each pull, or both not wipe them at all to get the real results.
I don't think I explained the adaptive in a way which came across well.It is 100% not needed with this mod. The MAF has a range of airflow it can measure. Removing the snorkel does not change air flow characteristics at the MAF (changing the intake tube will), nor does it increase the airflow beyond what the MAF can read. Disconnecting the battery with or without making this mod will result in the same thing. Mods which increase the potential for a leaner or richer fuel mixture (this one won't) generally do need the battery disconnected. Think of it this way, a new air filter flows better than a dirty one... but you don't need to wipe out adaptive every time you change the air filter... that's one of the reason's the MAF is there... so the computer knows the air flow regardless of filter condition, snorkel removal, etc.
If you disconnect the battery you will not get a true sense of what power increases, if any, this truly gives because you've wiped out the adaptive. Dyno graphs for before and after this mod both need to wipe out the computer for each pull, or both not wipe them at all to get the real results.
Last edited by DigitalMarket; Sep 17, 2010 at 01:15 PM.
Your link doesn't work. Also, I made no comments on the MPG issue.
I don't think I explained the adaptive in a way which came across well.
It is 100% not needed with this mod. The MAF has a range of airflow it can measure. Removing the snorkel does not change air flow characteristics at the MAF (changing the intake tube will), nor does it increase the airflow beyond what the MAF can read. Disconnecting the battery with or without making this mod will result in the same thing. Mods which increase the potential for a leaner or richer fuel mixture (this one won't) generally do need the battery disconnected. Think of it this way, a new air filter flows better than a dirty one... but you don't need to wipe out adaptive every time you change the air filter... that's one of the reason's the MAF is there... so the computer knows the air flow regardless of filter condition, snorkel removal, etc.
If you disconnect the battery you will not get a true sense of what power increases, if any, this truly gives because you've wiped out the adaptive. Dyno graphs for before and after this mod both need to wipe out the computer for each pull, or both not wipe them at all to get the real results.
I don't think I explained the adaptive in a way which came across well.It is 100% not needed with this mod. The MAF has a range of airflow it can measure. Removing the snorkel does not change air flow characteristics at the MAF (changing the intake tube will), nor does it increase the airflow beyond what the MAF can read. Disconnecting the battery with or without making this mod will result in the same thing. Mods which increase the potential for a leaner or richer fuel mixture (this one won't) generally do need the battery disconnected. Think of it this way, a new air filter flows better than a dirty one... but you don't need to wipe out adaptive every time you change the air filter... that's one of the reason's the MAF is there... so the computer knows the air flow regardless of filter condition, snorkel removal, etc.
If you disconnect the battery you will not get a true sense of what power increases, if any, this truly gives because you've wiped out the adaptive. Dyno graphs for before and after this mod both need to wipe out the computer for each pull, or both not wipe them at all to get the real results.

yes you're right on both counts. As a hobby of mine, I like to confuse myself and then try and backup why I'm right

EDIT: Concerning your comments on the cold air intake. I think I'll try and put some weather stripping in there tonight and see if that has any affect on my MPG. Though with the weather getting cooler my results may be tainted.
Last edited by ncTidalWave; Sep 17, 2010 at 02:31 PM.
I am surprised someone doesn't make a custom larger diameter snorkel for the '09-'10s for those who want the extra couple of HP at the cost of a noisier intake. Just ripping the snorkel out degrades a really nice factor CAI and makes it a warm air intake. In general, the mileage is a little better with warm air, but power is decreased. Not worth it to me. If one was willing to commit to the change, you could cut the snorkel where it is large, and put on a piece of PVC pipe through the fender. If you need to make it oval to go through the hole, just heat it to 210 - 220 degrees in the oven and quickly shove it through while it is soft.
I did the job in about 5 minutes, removed headlight, and airbox lid/ filter, pressed down and wham-o... Out! I enjoy the drone, maybe a little more pep than previously, but I am sure if I reset my ECU, that I will lose the "pep"



