OD a search or go back 5-10 pages. This thread came up just a week or two ago. In general power gains and quiet don't belong in the smae senetence when looking at exhausts. Elimination of the cat is good for a few decibles too. Why did you remove it? Keeping a functional cat is free, now you'll have to buy a new one, the definition of not saving money.
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Steve
93 240sx FB currently very clean and for sale
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