How hard its to replace knock sensor & harness on a 04 Infiniti g35? 

@Adan Arceo - It's not hard. Just a bit time consuming. If you love engineering then it's easy.

You can replace the harness with that trick, but if you want to replace the knock sensor itself, that's even harder than this. Insane design.

tight

what did he do that would warp it? genuinely curious because I'm about to do this whole process.

Brendon Pearson I’ve done it just as this guy did it. And never had an issue. I’m not sure what he’s talking about. I’ve also done it straight through the front and just about had to take none of that apart. Though that was a pain in the ass

I thi k he's talking about the torq specs and that you have to break them loose in a specific pattern

@@De.350z each bolt he took out has its own specific measurement, they are all different sizes. You have to remember where each one goes. this guy surely ran into some engine problems a few thousand miles after doing this repair