Bung placement

[Harry08]

Has anyone installed a bung in the stock H pipe on a 07-09 GT500 for reading A/F ratios? If so where is the correct location? I am thinking above the drivers side cat but am not sure of the distance between the cat and the manifold. Thanks in advance.

 

[scotsam]

Haha he said bung!

 

[scotsam]

But seriously I don't think there's enough room between the manifold and cat that there would be much of a difference. From a technical standpoint probably as close to the manifold as possible being the factory o2 is in the manifold but I really don't think you have enough room to matter.