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a stock cat robs waaayyyyyy more than 2-3hp. jsut look at the results from ditching a cat, people pick up a full mph or more of trap speed without any tunign or anything. i picked up 1.5mph through teh traps in my 91 with no other changes.
with tuning the difference becomes even greater.
go !cat and don't look back. you will see an immediate and very noticeable power increase and improved fuel economy.
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