havok209

Has anyone notice a significant increase in gas milage after switching the front o2 sensors and cleaning the MAF?? I've got 136K miles on my bad mamma jamma and I don't know if the previous owner ever swapped them out(highly doubt it).

josh.davis

I bet you would gain at least 1mpg.

effingroovin647

significant no, maybe 1 mpgif ur lucky

havok209

HHhhmmmm... But it should run better right?

Projectquick

When I did a really good tune up on my dads car(02 gt) I replaced everything that looked worn out, including o2 sensors. After a really good tune up he saw an increase of about 2 mpg, but the car really ran great so he didn't need to drive the same way he used to. I think its gone doen about1mpg now since it runs so well he drives it a little harder.