Help!! VF SS S2 fitted with HSV R8 headers/cats and center pipe

[HyonV8]

Hi,

I know there are a lot of posts on this subject but unfortunately I can’t find the advice I’m after. I’m hoping one of you may know from experience.

I have a VF SS S2 redline. I have purchased R8 340 headers and cats that I intend on fitting onto the car along with an R8 or GTS center section.

The headers / cats I have measure the correct 2.5 so I can confirm that they are 340. My dilemma is they only have the o2 sensor Bungs in the headers themselves and not the cats.

I believe My car will currently have sensors in the headers and cat pipe ( not cat back ).

My question is, what’s the best way around the issue of not tripping the sensor lights error? Have the o2 sensors drilled into the mid section and extend the current o2 sensor wires so they can reach and connect? Will changing the location so the front and rear sensor are further apart cause an issue? Or some how have the bungs drilled into the cat pipe so it aligns with the current set up.

Has anyone been in this situation and had a successful resolution?

Your help will be much appreciated.

 

[3rspecB]

Find yourself VF R8 340 center section as it has the rear 02 sensors bungs from factory. If not any competent exhaust shop can weld in 02 sensor bungs and you won't need extension harness.

Here is a pic of VF R8 340 2.5 "center section with the 02 sensor bungs and a VF GTS center section. By the way the VF 2.5" GTS center section (sedan/wagon) is for sale if needed, PM me if interested (I'm in VIC too).

 

[HyonV8]

Thanks mate.
My concern mostly is that I don’t want to trip sensor lights. If I have o2 bungs welded into Center section, I’d obviously need extensions for the factory o2 sensors currently in my cat pipe. Will moving the o2 sensor from the cat to the cat back trip the sensor?

 

[3rspecB]

Thanks mate.
My concern mostly is that I don’t want to trip sensor lights. If I have o2 bungs welded into Center section, I’d obviously need extensions for the factory o2 sensors currently in my cat pipe. Will moving the o2 sensor from the cat to the cat back trip the sensor?

No you won't need extension if the 02 sensor bungs are welded in the same spots as the VF R8 340 center section. I didn't need any extensions to fit my rear 02 sensors in the VF R8 340 mid section with factory 02 bungs in the center section.

 

[bigjim92]

As mentioned above, there is no need for O2 loom extensions.
VF series 1 ran the O2 sensors in the catback. VF series 2 run the O2 sensors right behind the cat. Loom is the exact same, difference is the location. I'm tipping it's been moved to help with emissions. However if you're still running a factory cat, you won't have any issues with warning lights.

 

[HyonV8]

That’s guys really appreciate it. Hopefully below are some pics of the headers and cats I purchased.
Big jim, do these look like the right headers from the 340 pack.

 

[HyonV8]

....

 

[Murdoch]

Is your car tuned?
Just get the back sensors turned off

Hi,

I know there are a lot of posts on this subject but unfortunately I can’t find the advice I’m after. I’m hoping one of you may know from experience.

I have a VF SS S2 redline. I have purchased R8 340 headers and cats that I intend on fitting onto the car along with an R8 or GTS center section.

The headers / cats I have measure the correct 2.5 so I can confirm that they are 340. My dilemma is they only have the o2 sensor Bungs in the headers themselves and not the cats.

I believe My car will currently have sensors in the headers and cat pipe ( not cat back ).

My question is, what’s the best way around the issue of not tripping the sensor lights error? Have the o2 sensors drilled into the mid section and extend the current o2 sensor wires so they can reach and connect? Will changing the location so the front and rear sensor are further apart cause an issue? Or some how have the bungs drilled into the cat pipe so it aligns with the current set up.

Has anyone been in this situation and had a successful resolution?

Your help will be much appreciated.

 

[[paradox]]

To answer your original question, just get an exhaust shop to put the o2 bungs into the mid pipe.
Won't need extension, and won't throw a code of in same location as above.

I have my own question though. How easy are these headers and cats to find now? Maybe I'm not searching the right thing. I was considering just getting shorty pacemakers instead, but assume still need these cats for them to fit, or get cats made up, or mine hacked up.

 

[HyonV8]

Is your car tuned?
Just get the back sensors turned off

Not tuned and don’t plan on it just yet.