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Old 01-15-2004, 07:30 PM
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ok i was wondering how much hp i can free up if i go froma 2.5 in dp to a 3 in. is it worth it? i put down 298whp at 12psi
what do you all think?
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Old 01-15-2004, 08:06 PM
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I think you'll be fine with changing the downpipe transitioning from 2.5 to 3 inch. It creates a slight vertex vaccuum that can assist in pulling exhaust gases along as it forces it out..
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Old 01-16-2004, 08:03 AM
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at higher psi you will notice more of a difference.

i went from a 2 inch to a 3 inch and gained almost 30whp..


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Old 01-16-2004, 08:10 AM
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Is it possible to keep the A/C with going to 3"? I was looking at my 2.5" and it's a tight fit. Ditching A/C in AZ is not an option
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Old 01-16-2004, 08:14 AM
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its possible if you can make tight enough bend coming off the turbo
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