04 3RZ-FE down on power

so my 04 Tacoma 4x4 3rz-fe feels way down on power. I have 270,000 miles on her and keep her very well maintained. plugs oils...ect. I have a K&N CAI and super 40 flowmaster and a power chip but still doesn't feel like it's got much power. tires are 265/75 R17. also I'm getting 20mpgs so avarage of 300miles a tank. any suggestions on where or what to do to help make some more power????

 

The 1st thing I would do is clean the MAF then run it around the block. If no change, clean the throttle body.

Where did you get the 'power chip', part # and what brand?

300 miles per tank AND 4x4, wow... that's impressive. Since I am the original owner, my '03 did that once.

 

Yeah theres nothing wrong with that mileage. Have you noticed a dscline on power since youve owned it or has it been this way since your ownership? If its alwyas been that way welcome to owning a 4 banger...

 

Those 33" tires have greatly contributed to your power loss. Go back to stock diameter, likely 31", or re-gear to 4.88's .

 

^^ What he said.
My '03 (auto trans) came with 4.30's and was a real dog, never used OD.
I am now running 5.29's with my 285-75-16's and it's awesome. Still no powerhouse but so much better than OEM.

Good luck.