You have 3 O2 sensors

1- header
2- downpipe between cat and flex
3- midpipe between cat and resonator

 

Depnds on the year though but yea most of them are 3.

ROAD/RACE

 

Hey Rock noone was able to answer my question about whether or not if I bought the HF cat and welded it on would the CEL eliminator be necessary? Also in between the time I install the header/dp which O2 censor would the eliminator be installed on? This would just to keep the light off on the way to the welder

 

The HF cat is the ideal route for noise and for the CEL. No Elim needed them but CEL elim goes into the second hole if that is the way you want to go.

ROAD/RACE

 

Did you order. I have 3 sets left then it is gonna be a month before the next batch is built and comes back from ceramic coater.

ROAD/RACE

 

I ordered already thanks =] It will be here on monday! cant wait!

I will make sure to do before and after videos from stock header/dp to the RRM one... then another before and after for the hf cat... This is all with the magnaflow catback already installed

 

Cool. You are gonna dig it. Love the white front lip too.

ROAD/RACE

 

Well, I finally got the Header/Downpipe/High-Flow Cat installed yesterday! First off, I did notice a pretty decent gain in top end. However, it does seem a bit raspy when you stomp on the gas, even with the HF Cat.

Does anyone know if it just needs to be broken in? I'm hoping that's the case and that the raspiness goes away. I could only imagine how it would sound if I didn't have the HF on there! Cruising at low speeds through parking lots or side streets though, it produces a really deep and loud rumble. I manage to set off more alarms now than I did before with only my cat-back installed.

 

i am still looking for someone to possibly post a video of the sound with the header/dp, and a catback exhaust

 

I wish I had a video camera. All I have is my crappy cell phone which only records every other frame.

 

i wish i could give you a vid of how it sounds but i dont even know how my car sounds... stopped workin the day i put it in...

 

ahaha yea, bad luck, but i know when you get it back its going to sound like a beast =)

 

I won't be able to get a vid on how it sounds without the HF Cat... I'm having the shop weld in the cat before I get it back... but I'll def. put up a vid of the sound if noone has by that time

 

here is my crappy video, its not that good but you can have a taste of how it would sound. My mods are injen CAI, pulley, header and custom 2.5 exhaust with freeflow muffler.

http://www.youtube.com/watch?v=QauqiApgDbI

 

is that vid with rrm header/dp?