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Yes i know about the hiss, which I heard is more with the test pipes. But really less than 5-8? Thought it would be more, like 12-14 range, thats what

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Old 09-05-2012, 10:06 PM   #1 (permalink)
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Yes i know about the hiss, which I heard is more with the test pipes. But really less than 5-8? Thought it would be more, like 12-14 range, thats what I have heard most of these give, anyways thanks for the input.
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Old 09-05-2012, 10:40 PM   #2 (permalink)
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Yes i know about the hiss, which I heard is more with the test pipes. But really less than 5-8? Thought it would be more, like 12-14 range, thats what I have heard most of these give, anyways thanks for the input.
I think if you do HFC/TP as the first breather mod, it does indeed give that much wheel horsepower. Doing them after Intakes or Exhaust will give less - they don't add together like a linear equation.
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Old 09-05-2012, 10:45 PM   #3 (permalink)
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I think if you do HFC/TP as the first breather mod, it does indeed give that much wheel horsepower. Doing them after Intakes or Exhaust will give less - they don't add together like a linear equation.
Is that right? Never knew, anyways Im sure freeing up the cats will still give me a performance bump, so I think Ill still go with it. I never thought of cats back when I was doing intake and exhaust, but since now my current setup is boring me I need to change it up!
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Old 09-05-2012, 11:40 PM   #4 (permalink)
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Is that right? Never knew, anyways Im sure freeing up the cats will still give me a performance bump, so I think Ill still go with it. I never thought of cats back when I was doing intake and exhaust, but since now my current setup is boring me I need to change it up!
You will always feel gains with a cat-replacement, whether it be HFCs or test pipes. You don't need to go to a dyno for you to feel your *** get just a bit more planted into your seat.

10+ horsepower? Definitely if test pipes are your only change.
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