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Discussion Starter #1
How do I accomplish attaching a 3inch high flow cat to the stick exhaust without leaks? The flange on the 3 inch appear to be nearly impossible to line up with the stock flanges? The overlap is just tough it seems.
 

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You could do that, but it still might leak later. I ended up using an adapter flange from ETS to connect my test pipe 3", to the stock downpipe 2.5".
 

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Discussion Starter #4
Thanks I'll have to order that. The ultra copper worked. Took it for a spin today and no leaks. But that adapter seems more robust.
 
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