Please post any change in performance or mileage with the new O2s. I've heard of some pretty significant mileage improvements, hope it's true.

 

Mprohr,
I have also heard of some very noticable improvments after replacing the O2s. Unfortunatly Im returning my Boschs as we speak. I am either going to do the work myself or pay a shop, but being that I have to drop the cats in order to get to the O2s, Im going to replace them with OEM so I dont have any problems since the Boschs are known to cause CELs. Ill keep you guys posted. I have a feeling it would smooth out my engine with 112k on it.

 

Rengnath,

Sorry I didn't get back to you. I can reach my pre-cat and post-cat O2 sensors with a 3/4" end wrench. The pre-cat sensors are in a little more of a tight spot, but it took me about 3-4 minutes to remove one of them.

I don't know if this changes anything, but I have a 3.7L...

 

Thanks Donkey,

I forgot that you have the 3.7l .... Im guessing you have a little more space. I couldnt even get a 7/8" wrench up there because the starter was in the way on the drivers side, and then I didnt even bother trying to get to the passanger side one.

Maybe Ill just do headers in spring, and work everything out then. Lol.

 

so....wow....another thing that we cant replace ourselves.....

 

Edit: 7/8" wrench. Sorry, the last few days I have been fighting a nasty bug...and I was a little fuzzy.