How much HP 2.5 exhaust?
How much HP will 2.5 exhaust support in a N/A car?? Was wondering if it was worth it to go with a full 3in. system. Thanks.
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You won't get a true 3" system unless you buy one. I think KOOKS and LG are about the only ones that make a full header to exhaust tip in 3".
Most headers and cat-backs have a 2.5" connection point. Unless you're making really big HP I wouldn't worry about going to a full 3" system. However, a 3" will give you a little bit of deeper tone when idling. |
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the magic number is 2.2cfm /HP. Any more flow is a waste of money.
Here is a decent unbiased article with science behind exhaust system design |
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n/a i dont think the gains will be but like 1-2 hp if that. the weight of the extra pipe. will counter balance that tho lol
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Thanks for the replies. Looks like it's not worth changing to 3in.
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Sure it is. A 3" sounds like heaven on these cars.
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JRE has an 800 rwhp on the 2.5" exhaust. Blower car though
I run the Kooks 3". It does sound evil at the track!:happyanim: |
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Most 3" cat-backs have a 2.5" inlet so they can connect up to the stock mid pipes. KOOKS makes a 3" inlet cat-back as well as LG. I think ARH might have one setup that way as well. |
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