My main fuel feed line cracked so I'm replacing it with a new one but im having trouble getting it loose from the bottom of the car, there seems to be some white residue. Is that like locktight or something? It is reverse thread or something? That thing is too hard. I'm using a Cheater bar and everything but nothing. Anyone?

 

Make sure you're using a flare nut wrench so you're getting the best bite on the line. You're most likely losing a lot of your torque from an open end wrench/crows foot due to it rounding the fitting slightly. To me, that looks like it might have teflon tape on it to prevent leaks, I could be mistaking though. Get yourself the appropriate wrench and use a little PB blaster and you should be in good shape.

Example of said wrenches:

 

I'm doing the same job. Did you figure out how to get to the connection under the car and what did do to undo the connection? Thanks

 

Follow up to the above....PB blaster bath the day before and a 11mm flare wrench with some effort it came off. After that, very easy replacing the fuel line. Beware there are slight differences to the fuel rail connection end between myoo-03 and my04-09 fuel lines. Be sure to check the part before installation it's very obvious.