when i first removed it i droped a couple of points. but on the way back from cali i was averagin about 19-21 on the highway and in the city for a couple of days.... but now its all downhill, im averaging 14 now!! wth? did i get bad gas or somethin? still driving normal like i always do and my truck is still bone stock besides the hc filter....
__________________ 2008 White CrewMax SR5 4x4 TRD No Fear .50Cal Grille - NoFearGrilles.com Tow Mirror Swap! =] Coga PA System 5% Tint Color Matched Grille Surround DRL Disabled
I have placed this info on other sites, here goes.
I have a 2008 DC 5.7 4x4 with 15000 miles and a bed cap. I removed the HC charcoal filter.
After an 820 mile trip on paper I got 21mpg.
I use the manual shift a lot but the AI kicks in when taking off from a stop.
I love this truck and when Obama is voted out gas prices may come down even more.
Greg D.
It looks like I'm the only unlucky bastard here. I pulled the charcoal filter - drove 545 miles to Tampa and got --- LESS MILEAGE!!!!!!!!!!!!! Took + battery cable off for 45 minutes - next day drove 780 miles all over the place and used Chevron gas whch usually yeilded 17.8 @ 72-79 mph and got----- 16.5!!!!!!!!!!. I am beside myself here - any input boys?? I sure could use some guidance.
Too many variables to cover in one post. You have to consider wind, road grade, speed, summer vs winter gas, etc. Unless you do back-to-back runs in identical conditions it is not a valid comparison.
Bottom line is the battery disconnect trick will only give a temporary increase in mileage. For maximum benefit you need to do this on a warmed up engine, then immediately start driving gently after reconnecting.
The reality is the only way to increase your mileage long term is being gentler with your right foot. I regularly get 17+ around town, but I can suck it down to 14 pretty quickly if I want to.
__________________ 07 DC SR5 TRD 4x4 5.7 TRD exhaust, 46K miles, 17 mpg city after battery disconnect reset. Truxedo Lo-Pro with deck rails. Front Susp: Stock coilovers, 4" lift (http://www.tundrasolutions.com/forum...6-4-inch-lift/), swapped extra spacers for Bilstein 5100s on lowest setting, wheel well height still 41.5." Rear Susp: ProComp ES3000 #326510 (2.25" taller than stock), 1.25" blocks plus PRG mini-pack (http://www.tundrasolutions.com/forum...and-new-truck/) gives 2.25" total lift, parking brake cable bracket spacers, wheel well height 43." Front diff and rear ds drop; trailer hitch electrical harness tucked up above bumper. After 20K miles swapped 305/65/18 BFG AT for 285/75/18 Toyo AT, still on stock 18x8x60 offset TRD wheels, about 1/8" clearance to sway bar. Like the extra height but miss the width. Next time either 305/70/, 295/70, or 35x12.50/18. Added 5th 285/75/18 Toyo AT as spare. Bed Bounce: Stiffer E-tires are worse than stock P-metric; biggest improvement from PRG mini-pack, slight improvement from shocks. Still a stiff ride but tolerable now. Best things about this truck: 5.7 and transmission, interior size and comfort, very quiet at high speed. Worst things about this truck: bed bounce, no VSC in 4wd, mileage sucks above 70.
Too many variables to cover in one post. You have to consider wind, road grade, speed, summer vs winter gas, etc. Unless you do back-to-back runs in identical conditions it is not a valid comparison.
Bottom line is the battery disconnect trick will only give a temporary increase in mileage. For maximum benefit you need to do this on a warmed up engine, then immediately start driving gently after reconnecting.
The reality is the only way to increase your mileage long term is being gentler with your right foot. I regularly get 17+ around town, but I can suck it down to 14 pretty quickly if I want to.
No question driving habits have more to do with better mileage than most any other variable.
Driving with the truck lightly loaded, towing, into the wind etc. all have an effect. Face it boys, we don't drive Tundra's for the gas savings but improvements are always welcome.
I recommend using manual shift mode and get to that 6th gear ASAP with a light foot on start-up. I have removed the HC filter and last trip got 20 MPG on paper. Wind was behind me most of the way home Praise Be!
I do think all things considered 20+ highway is very possible with sensible speeds and quality fuel.
It O.K. to let the badger loose on occasion but be willing to pay the price at the pump.
Blessings and drive safe.
__________________
2007 Salsa Red Limited Crewmax
Nav, Sonar, 20" Carved Wheels
Born in TEXAS Built by TEXANS
aFe Stage II Pro-S Dry Si
Corsa Sport Single Cat Back Exhaust
This has to be one of the best free mods you can do for mileage and power.
What other free mods are there??
Another one I like, pop the hood and pull the metal clips from the horns. Takes a whole 30 seconds and noticeably pumps up the volume when you hit the middle of the steering wheel.
I live in Arizona and will try this. Do i just buy a filter from an auto zone or checkers to replace the one I'll be taking out? Does the Brand matter?
I live in Arizona and will try this. Do i just buy a filter from an auto zone or checkers to replace the one I'll be taking out?
The HC filter is in the top cover of your air filter box. It is mounted by plastic tabs and was not designed to be removable. It is actually an emission filter made of a charcoal material. It has little effect, if any, on the air flow to the engine. Others will tell you different, but the results are merely wishful thinking and have no documented proof of mpg improvement.
__________________ '07 Tundra SR5, 2WD DC, 5.7L, Salsa Red Pearl with Running Boards, Delta Toolbox.
It looks like I'm the only unlucky bastard here. I pulled the charcoal filter - drove 545 miles to Tampa and got --- LESS MILEAGE!!!!!!!!!!!!! Took + battery cable off for 45 minutes - next day drove 780 miles all over the place and used Chevron gas whch usually yeilded 17.8 @ 72-79 mph and got----- 16.5!!!!!!!!!!. I am beside myself here - any input boys?? I sure could use some guidance.
I am also getting worse MPG as a result. I drive my 4.7 aprox. 20 miles one way to work on the highway @ 65-70 MPH. I was getting 14.0 AMPG. After removing the HC filter, reseting the battery, and puting in a K&N drop in filter I am getting 13.2 AMPG. Anyone have any words of wizdom???
Can you just unsnap the four clips that hold the top of the air box and lift the top of the air box up enough to get at the filter or do you have to disconnect the maf sensor and remove the hose clamp and hose to get at it?
__________________
2008 TUNDRA DBL Cab, Limited.
Line X Bedliner
Ventshade Window Visors
Rampage Streamline Step Bars
2005 Rockwood 26' 5'er, Michelin LTX MS tires, 270 watts of solar on the roof, 4 T-105 golf cart batteries, Xentrex converter, Outback FX2012T inverter/charger.
If you can't take it with ya, why bother with an RV!
2000 Tundra (bought 9/9/99)
JBA Headers
Gone but not forgotten~
Re: 19.8mpg after HC removed!
No question driving habits have more to do with better mileage than most any other variable. 
'07 Tundra SR5, 2WD DC, 5.7L, Salsa Red Pearl with Running Boards, Delta Toolbox.
I drive my 4.7 aprox. 20 miles one way to work on the highway @ 65-70 MPH. I was getting 14.0 AMPG. After removing the HC filter, reseting the battery, and puting in a K&N drop in filter I am getting 13.2 AMPG. Anyone have any words of wizdom???
Linear Mode
