yotarunner96

my 4runner has 121k miles on it and i decided to change the o2 sensor before the cat, well im glad i did. i took the old one out and it looked like a burnt peice of charcoal. hopefully it will make a difference.

ebelen1

Let us know of mpg difference and such...

calg3

Yes, I am interested in finding this out, too. Where did you get your O2 sensor?

yotarunner96

got the sensor from urdusa.com, ill post when i can notice mpg difference, end of week maybe

boraxman

I bought a brand new one of Ebay cause it was a deal. I havent changed it as the original(145k mi.) hasnt threw any codes.

Anyone think I should change it or wait?

yotarunner96

it wouldnt hurt to just put it on, mine didnt throw any codes either

yotarunner96

i dont know if its me or what. has anyone who has changed o2 sensor noticed a increase in power or performance. it could just be my head thinkin that there is more but who knows. still to early to tell gas mileage though

Bob_98SR5

no, its your trd sticker

seriously, not really. i think its all in your head. it should not have that much of a drastic improvement to even notice

bob

yotarunner96

thats what i figured, that TRD sticker did help me out when i got it though, gave me about 10-15hp to the wheels. i guess cool stickers do this sort of thing