Re: How to increase HP and gas mileage in Tundra
...something that seems to have failed getting a mention...is that 9 times out of 10...you aren't going to get a boost in horsepower & mileage at the same time.. From what I know, almost everything out there is either not going to increase your mileage, or it's negatively going to effect it.
From everything I understand that best way in a truck to get decent mileage, is put either a tonneau cover or a camper shell on it (or drive with the tailgate down all the time.) Make sure your air filter and injectors are clean...
And stay off the throttle.
Everything that's going to increase your horsepower is pretty much not even noticeable unless you do everything all at once. Did I gain some horsepower when I pulled the stock exhaust off of Beth (see sig) and replaced it with a high performance Micron? Probably. Can I tell? Nope. 
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Lisa = 2003 Access-Cab Tundra SR5
C/R/C Tails, Clear Corners, Westin Black Ultimate Bull Bar, Toyota of Dallas Grille, PIAA 510 Ion Yellow Fogs, Putco LED Third Brake Light, Luverne Black Nerf Bars, Bilstein 5100's, Wheeler's AAL's, 285x75R16's on A.R. Trench wheels.
Horsepower is how fast you hit the wall.
Torque is how far you push the wall.
-Unknown
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