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Old 11-26-2008, 02:45 PM   #29 (permalink)
dichotomous
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Join Date: Nov 2008
Location: vermont
Posts: 142

CivySi - '03 honda civic SI
90 day: 31.99 mpg (US)
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Quote:
Originally Posted by Christ View Post
I wasn't advocating removal of the cat, without proper tuning methods to negate the extra pollution that might be created. To clarify.

I removed mine because it was likely causing more emissions than it was saving, because it was mostly plugged, and wasn't working very efficiently. This caused excess restriction in the exhaust, making the engine work harder, costing me fuel economy. If I had the money, I would replace what's there now with a hi-flow. I don't have it though, right now, hence the reason I'm only doing free stuff to either of my cars.
check out ebay for some high flow cats, the magnaflows are running around $60 before shipping, there are some no name cats for less as well.
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