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What would give the most speed/hp?

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Old Aug 5, 2008 | 11:43 AM
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Default What would give the most speed/hp?
I have a flowmaster catback with dual exhaust pipes. I put in a 3 inch cutout and then got headers and a y pipe. My questions is which provides more HP/Speed? Would it be an open ORY or closed ORY with open cutout or closed everything?
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Old Aug 5, 2008 | 12:11 PM
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mine felt the same when I ran an open Y pipe compared to my borla with no plate, which is basically a cutout. I perferred the sound of the open Y but local cops wern't a fan of it so I put the borla back on
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Old Aug 5, 2008 | 12:26 PM
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From: johnson co.
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open ory would yield best performance.

however, i think it sounds like ****.
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Old Aug 5, 2008 | 02:19 PM
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run it open .
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Old Aug 5, 2008 | 02:44 PM
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From: Justin, TX
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You will get more horsepower with an open exhaust, but you may have a feel of dropping in quickness.
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Old Aug 5, 2008 | 03:01 PM
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When I went open headers for a bit it did seem to loose acceleration, then I put the open y on and it seemed to gain some acceleration.
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Old Aug 5, 2008 | 04:06 PM
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Run open cutout it will pull a lot harder up top
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