AIS filter
Post Fiend
Joined: Nov 2007
Posts: 9,549
Likes: 14
From: Payson, AZ
I ran the AIS for 7 months and switched to the 6637 nine months ago. I'm going to go back to the AIS tomorrow. I don't care for the drone at freeway speeds. I am glad I held onto it.
Senior User
Joined: Apr 2005
Posts: 324
Likes: 0
PonyboyChris,
You live in CO...do you tow any in the mountains? did you notice any changes in EGT's pulling, or did you go straight from stock set-up to AIS?
I do just about all my towing in the high country there is no way around it in Colorado you are either going up hill or down hill & pulled with the AIS & 6637. I have not noticed any power difference between the two filters, as for the EGT's hard to say while pulling because they are going up & down a lot while pulling & passing other vehicles.
The two things that did change was the noise the AIS is not as loud & when you come to a stop the EGT's dropped much faster with the AIS than the 6637.
Just a side note I'm running the sleve with my AIS & have never pulled the minder even on WOT pulls empty & close to WOT pulls loaded.
You live in CO...do you tow any in the mountains? did you notice any changes in EGT's pulling, or did you go straight from stock set-up to AIS?
I do just about all my towing in the high country there is no way around it in Colorado you are either going up hill or down hill & pulled with the AIS & 6637. I have not noticed any power difference between the two filters, as for the EGT's hard to say while pulling because they are going up & down a lot while pulling & passing other vehicles.
The two things that did change was the noise the AIS is not as loud & when you come to a stop the EGT's dropped much faster with the AIS than the 6637.
Just a side note I'm running the sleve with my AIS & have never pulled the minder even on WOT pulls empty & close to WOT pulls loaded.
Hotshot
Joined: Jan 2008
Posts: 13,144
Likes: 11
From: Rochdale MA
If you want to quote mutiple posts to the right of the "quote" button there is a button you click that on each post that you want to quote, when you get to the last one also click the quote button after clicking the multi quote button.
Post Fiend
Joined: Feb 2002
Posts: 10,600
Likes: 3
From: Carhenge
Maybe there's something to this idea of cold air intakes after all.
Post Fiend
Joined: Feb 2007
Posts: 14,541
Likes: 2
From: Dallas-Ft. Worth
No one ever claimed that the 6637 wouldn't suck hot air when stopped. However, I can still get mine to drop under 300, and even under 250 if I let it sit long enough (several minutes). Even sitting on high idle, it stays right around or below 300. I'll be doing that today for at least an hour. Maybe I'll get a vid... 
Lead Driver
Joined: Jan 2007
Posts: 6,708
Likes: 5
From: Kiowa CO
I tow a lot in the mountains. I live at 5800' and climb over a pass that tops out at 10,000' twice a year to drop my 5'ver on my property in South Park. I also tow my 3 place ATV trailer regularly along the same route all summer long. I keep an eye on the EGT's but never let them go to 1200 degrees. I towed once with the stock airbox and stock exhaust and I would hit 1200 no sweat. Now with my AIS, 4" exhaust and Jody's 60T tune, never really an issue. I do shift out of OD at certain spots to keep my RPM's up around 2000. It helps a bunch in keeping the temps down.
Lead Driver
Joined: Jan 2007
Posts: 6,708
Likes: 5
From: Kiowa CO
PonyboyChris,
You live in CO...do you tow any in the mountains? did you notice any changes in EGT's pulling, or did you go straight from stock set-up to AIS?
I do just about all my towing in the high country there is no way around it in Colorado you are either going up hill or down hill & pulled with the AIS & 6637. I have not noticed any power difference between the two filters, as for the EGT's hard to say while pulling because they are going up & down a lot while pulling & passing other vehicles.
The two things that did change was the noise the AIS is not as loud & when you come to a stop the EGT's dropped much faster with the AIS than the 6637.
Just a side note I'm running the sleve with my AIS & have never pulled the minder even on WOT pulls empty & close to WOT pulls loaded.
You live in CO...do you tow any in the mountains? did you notice any changes in EGT's pulling, or did you go straight from stock set-up to AIS?
I do just about all my towing in the high country there is no way around it in Colorado you are either going up hill or down hill & pulled with the AIS & 6637. I have not noticed any power difference between the two filters, as for the EGT's hard to say while pulling because they are going up & down a lot while pulling & passing other vehicles.
The two things that did change was the noise the AIS is not as loud & when you come to a stop the EGT's dropped much faster with the AIS than the 6637.
Just a side note I'm running the sleve with my AIS & have never pulled the minder even on WOT pulls empty & close to WOT pulls loaded.
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
3 Best / 3 Worst Parts of Modern Ford Ownership
Brett Foote
10 Amazing Upgrades That Solve Common Ford Truck Owner Headaches
Pouria Savadkouei
Every 2026 Ford Engine Explained
Brett Foote
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
Post Fiend
Joined: Jun 2004
Posts: 9,293
Likes: 10
From: Parker, CO
We'll have to get together and go riding sometime. I know of another PSD guy that goes ATV'ing with me. He's a crazy SOB.
Lead Driver
Joined: Jan 2007
Posts: 6,708
Likes: 5
From: Kiowa CO
Nevertheless, let me know if you want do an easy camp. I have two acres of God's country, plenty of open space around with no one to hassle us and you are more than welcome!
Post Fiend
Joined: Feb 2007
Posts: 14,541
Likes: 2
From: Dallas-Ft. Worth
No one ever claimed that the 6637 wouldn't suck hot air when stopped. However, I can still get mine to drop under 300, and even under 250 if I let it sit long enough (several minutes). Even sitting on high idle, it stays right around or below 300. I'll be doing that today for at least an hour. Maybe I'll get a vid...
Post Fiend
Joined: Jun 2004
Posts: 9,293
Likes: 10
From: Parker, CO
OK, lets define MY atv ridin'. It usually required one hand on the handbars and the other holding a cold beverage....
Nevertheless, let me know if you want do an easy camp. I have two acres of God's country, plenty of open space around with no one to hassle us and you are more than welcome!
Nevertheless, let me know if you want do an easy camp. I have two acres of God's country, plenty of open space around with no one to hassle us and you are more than welcome!
Thread
Thread Starter
Forum
Replies
Last Post
