I am going to install helix test pipes and can't find the DIY guide.... If anyone could lead me there I'd apprecitate it..... thanks and can't wait to feel the power gains....

 

I see you got the pipes. Sorry, they didn't come with instructions. From what I've read the install is pretty easy. You just have to be careful removing the o2 sensors.

check these threads out they might help you.

link 1

link 2

here's some pics for ya:





Enjoy.

 

I have a question, so the test pipe connects the header directly to the Y-pipe?
what about hi-flow cats, does that also connect the header directly to the Y-pipe?

 

It is pretty much remove the 4 bolts/nuts on each side along with the O2 sensors and pop them in. If you have it on a lift it is a breeze.
Consider taking it to a muffler shop and pay them the $50.00 to install.
Everyone I have talked to that tried them said they are just toooo loud!
Let us know what you think.

 

yes they are loud and thanks for the help..... i'm pretty good with installing, but i just wanted a guide so i don't miss anything.... anyways the lift helped out tremendously and i had an extensive set of tools therefore install took about an hour if that.... good gains and extremely loud with injen ses exhaust.....