Well I will start off by saying i'm not very mechanically inclined as for as cars go. I knew very little about cars prior to getting my Z about a year and a half ago.
Well I finally got my Invidia test pipes in and was thinking about bring it to a local shop to get done. After reading this post https://my350z.com/forum/intake-exha...ation-diy.html I decided to just give it a shot. Well 5 hours later I finally got the damn thing off. Looks like I got into a fight with a cat as I have scratches and cuts everywhere but in the end I got it done. Definitely would never have attempted this or installing my coilovers or BBK without good info from this site so just want to thanks everyone who puts up those DIY and the people who contribute all the good info.

Heres a couple of picks of the old cats out and the new test pipes in, I installed the 02 sensors in after I took the pick. This is something I will never want to do again but was nice learning experience.

 

congrads bro! we all start somewhere. and without the cuts, scratches and bruises, working on cars would be no fun. hopefully you learn/invented a new curse words or 2.

 

They aren't called demon bolts for nothing

Atleast you delivered, good job OP

 

Removing the cats SUCKS, but wait until you do the headers!

 

Congrats, this is a rite of passage for z owners. Youd be surprised how much easier it becomes the second (and third and fourth) time around.

 

Not to hijack your thread, but i just completed a weekend spree of new steering rack, headers, and front suspension bushings... I wish bushings on no man.

 

Amen to the bushing comment. I bought a full set of new arms and energy suspension bushing. This way I could do all the bushings prior to "racking" the car.

 

Congrats! Ive done many of the other mods except this one. But I have swapped cats on other Zs. The demon bolt isnt too much of a big deal if one uses PBblast the night before and if you use 6 feet of socket extensions.

 

I just ordered me some new cats

Too bad my bolts look like





Im going to hopefully get the cats and the y pipe down as one piece otherwise I might just break out the sawzall and see what I'm left with.

 

Just a quick hit with a grinder

 

After installing my test pipes I got rasp from around 2000-2700ish rpm's and also a hissing sound on deceleration from around 2500-1700 rpm's. Did some research and read that people with Motordyne XYZ y-pipe with res is eliminating this issue. Just finished installing mine and WOW it really does, all the rasp is gone and there is no more hissing sound.
I would of never thought all that rasp and hissing were caused by my old y pipe.