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Discussion Starter · #1 ·
Right now I have a 3 inch turbo back exhuast on my 2001 jetta. It doesn't have a cat on it, only a magnaflow silencer, and magnaflow stainless steel muffler. If I put the cat back on will I lose horsepower or gain some?



[Modified by Faststang70, 8:19 PM 2-1-2003]
 

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Re: Will putting my CAT back on reduce HP (Faststang70)

I think everytime there has been a test between an exhaust with a cat and one without there has been little difference between the two as far as HP or TQ goes. Put the CAT back on, you're not driving your Dad's American Iron here...
 
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