WTF, My extreme poor gas mileage is killing me.. Please help

[hotmustang331]

Heck, I dont even have rear 02 sensors LOL. My shorty Dr Gas X didnt come with holes for them so we unplugged them. Luckly my chip delets them/turns them OFF. NO problems and I got 27MPG on the way to Georgia..usualy get around 22 with mostly highway...but I nail it a few times everytime I drive it. I have never seen under 20...but im sure its been under when I "play" alot, but not when I check it.

IMHO the mils are making the car go WAY rich...and autozone doesnt know what the heck they are talking about...MIL ellims will straighten everything up, and you 02s will NOT go bad. The front 02s are BEFORE the cats and are the same thing...they last nearly forever with ALOT of heat on them.

 

[TacBear]

Ok guys thanks, I just got back from autozone they read my code, they said it was my back o2 sensers where bad(code p1074) i think...

Now do you guys think they are really bad or i got the code because i dont have MIL eliminators and no cats? They told me in autozone that without cats the o2 sensors will go bad really quick and I will have to buy new 02 sensors no matter what!!!! And they also said that was my reason for bad gas mileage and that mil eliminators will not fix that (only the engine light), I will still get bad gas mileage unless I get cats put on.

And if I go ahead and install mil elim would it even matter if the 02 sensors are gone bad or not?

what do you think i should do?

The rear O2 sensor only tells the computer if the cats are working, it doesn't make the computer change anything.