Best Exhaust Setup for a WN Caprice with OEM Parts?

Hq King · Feb 12, 2021

Thanks for the reply

Hq King · Feb 12, 2021

I was going to cut flange of and run tube down with a 90ish degree bend at end to give a better entry into the cats and hopefully a bit more clearance around the oil cooler

RevNev · Feb 12, 2021

Hq King said:
I was going to cut flange of and run tube down with a 90ish degree bend at end to give a better entry into the cats and hopefully a bit more clearance around the oil cooler

Yeah, fitted with a cooler I believe interferes with the flange. I've had a look at a GTS contemplating header fitment and thought of cutting the 2.5"
outlet pipe at the collector on the 340 headers and extending the pipe past the cooler and re-flanging a bit lower down. I think there's enough room to do it and retain reasonable cooler clearance. The cat's are pretty high on the 340 set up, here's a 340 R8 pictured from underneath.

lmoengnr · Feb 12, 2021

RevNev said:
Yeah, fitted with a cooler I believe interferes with the flange. I've had a look at a GTS contemplating header fitment and thought of cutting the 2.5"
outlet pipe at the collector on the 340 headers and extending the pipe past the cooler and re-flanging a bit lower down. I think there's enough room to do it and retain reasonable cooler clearance. The cat's are pretty high on the 340 set up, here's a 340 R8 pictured from underneath.

Where are the post cat O2 sensors in your pic?

RevNev · Feb 12, 2021

lmoengnr said:
Where are the post cat O2 sensors in your pic?

They're just out view on the inside of the front pipes down towards the gearbox, probably a couple of inches rearward of the photo edge. I think they're pretty much in the same location as the stock LS3 2.25" front pipe, or perhaps is the stock location further forwards than the HSV pipes?

vxbris · Mar 10, 2021

R32GOJIRA said:
So just before Christmas i installed a Maloo mid pipe with the SS Ute electric bi-modal mufflers.
I can definitely hear the V8 now, but surprisingly, even with the bi-modals open, it's not as loud as I was expecting.
Still a nice note, but a little more volume would have been nice.
I can definitely hear when the AFM kicks in now, as the exhaust note changes and does produce a slight amount of drone.
I didn't have to modify any of the hangers or anything, everything fit straight in perfectly.
Now I just need to fit the bi-modal controller.

If anyone is interested, I do have another pair of electric bi-modals with flanged ends (not ball joint).

hey mate, wondering if you had that pair of bi-modals for sale still?
Cheers.

R32GOJIRA · Mar 10, 2021

vxbris said:
hey mate, wondering if you had that pair of bi-modals for sale still?
Cheers.

I certainly do.
I'll send you a PM.

VFSV6FORME · Mar 10, 2021

R32GOJIRA said:
I certainly do.
I'll send you a PM.

Argggh,,, another Caprice owner or a ute owner that want the Bi Modals for their car.

VFSV6FORME · Mar 10, 2021

vxbris said:
hey mate, wondering if you had that pair of bi-modals for sale still?
Cheers.

Spotted your avatar. A WN Caprice, no doubt V

Are you going to change the center Pipe?