Location of cats

for best emissions, you want it as close and you can get it to the exhaust manifold. You just need to save room for the O2 sensor to be before the cat.
There is no formula... the closer the better. You do want to put the O2 sensor at a similar distance from the exhaust ports as the factory.
Are you running pre-cats to, or just main cats?
No I don't have a Algore sticker on my bumper.
My reasons are I want car a little quieter than I'm getting w/ my Hooker turbo mufflers and the Cat will serve this function I think. They also eliminate some of the exhaust smell from the unburnt hydrocarbons. And they result in minimal decrease in performance. So shoot some holes in this rationale.
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