air silencer removed: best gas mileage yet!

[Robert Sayre]

A week ago I removed the air silencer from the air box. I also drilled a 1.5 inch hole about 1/2 way down on the fender side of the box just for good measure. My theory was that I wouldn't see or notice any appreciable change to the truck around town, execpt for maybe a slight difference in sound. I figure a modification like this probably doesn't have as much impact at local/city driving, but would have some effect at sustained highway speed.



This weekend I drove to Michigan and back, 244 miles. I got 20.6mpg round trip! Best mileage to date was 19.6. So the initial evidence shows it might have had an effect. A few more longer trips are needed to show more convincing proof. This is the first time in a few years I've driven that far without the family in the truck, so I was a little lighter. Has anyone else experienced that? I also was really expecting no difference in local drving, but I think it's more responsive and less sluggish at stoplights and just general driving. Of course, knowing that I changed something makes me question if I'm really feeling it or if I'm just thinking I do because I know I changed something.



Anybody else notice any changes from this mod? Anybody have hard evidence (repeated mpg rpts) that show this effect?

--Bob

 

[Rodger Tellefson]

Now enlarge the hole to 3" where the air silencer was. Change the engine oil, tranny fluid and differential gear oil to Royal Purple and not only get better gas milage, but also better performance.

 

[Gary Kong]

After taking out the silencer, and maybe enlarging the diameter of the intake hole, is there a way to get the cooler air into the box from the area that the silencer drew air from? Like a stealthy CAI?

 

[EddieS'04]

Eltee,,also take the plastic baffle out form behind the headlight. It will open up more cool air area..

 

[Rodger Tellefson]

Eltee, You can improvize by putting a 3" dia. x 6" +/- long PVC tube w/ flange that you can get from either a plumming supply or RV supply store. Or, just get a ZabTeck (site sponsor) True Cold Air Intake.

 

[Kyle Keller]

how would you go about cutting a bigger hole after removing the silencer

 

[Scott Heckler]

The best milage gain I ever got was putting on the KKM intake and replacing the exhaust with a Gibson cat back. Once you allow the engine to get more air it makes a big difference.

 

[Torrie McPhail]

There is a lot you can do in the calibration to increase MPG as well.





But in the end the biggest factor is your right foot.







Take care,

Mr. Torrie R. McPhail - (Owner)

http://www.FastPartsNetwork.com

http://www.UnleashedTuning.com

Ford/GM/Dodge/Chrysler/Jeep SCT Custom Calibrator

 

[Guru Guy]

Is there a project on this anywhere with pics?

 

[Nick Barber]

I read the project on removing the silencer without taking the box out because for the life of me i could not get the box out anyway and i was unable to pull the silencer out. I even banged on it with a hammer and it didnt budge. Looks like the box has to be removed to get the silencer out. Any suggestions?