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Old 10-18-2010, 10:12 PM   #1
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ORP Questions

Hi everyone, I was suggested that I should get a 3" ORP with a 3" Exh. I have a stock exh will a 2.5" give me some power with a stock exh? and will it be street legal? I'm almost if not completely new to this, some tips are much appreciated!


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Old 10-18-2010, 10:49 PM   #2
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a catback exhaust will not add you much hp but the orp will add about 7whp. together with the catback you might get about 10whp from them but i would only get a catback if you want the sound. theres no need to get 3" unless you plan on turbo/supercharging later on. otherwise i'd go with 2.5"
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Old 10-18-2010, 11:20 PM   #3
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does the orp and exhause need to be the same diameter?
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Old 10-19-2010, 05:07 PM   #4
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Not necessary to be same diameter, but it's optimal. I say keep your stock exhaust and get a high flow catalytic converter. Aftermarket exhaust pretty much doesn't add any power. The hp/dollar ratio with exhaust is very bad. The hp/dollar ratio for hi flow cat is great.
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Old 10-21-2010, 03:59 AM   #5
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thanks for the tip, any suggestions on a high flow cat?
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Old 10-21-2010, 04:34 AM   #6
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CFM sells one. go with them.
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Old 10-21-2010, 05:00 AM   #7
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Quote:
Originally Posted by LilDee View Post
thanks for the tip, any suggestions on a high flow cat?
JayRacing makes them
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Old 10-21-2010, 09:18 AM   #8
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IF your going to change the Exh then change it to a 3 inch , you already have a 2.25 stock and going to a 2.5 doesnt do much

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