alright im putting on an h pipe and i dunno the right name for them but those damn sensors, whats th easiest way to get them off? i got the 2 bottom ones off by disconnecting them because the nuts were pretty well rusted on but the 2 upper ones i can get to the connector and they are rusted on good imma try spraying the crap outta themw ith liquid wrench again but any ideas?

 

wrench wd-40 etc.. and some power.

 

yup.. wd-40 is the way to roll, they should screw out.. I think I screwed mine out lol

 

If you can get some heat on the old pipe around them and then spray em' it works faster.Don't get them too hot of you'll set your car on fire.