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Ported Throttle Body

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Old Nov 12, 2006 | 10:56 PM
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Default Ported Throttle Body

How much X-tra HP can one expect from porting and polishing the throttle body on an '04 C5 LS1? Thanks for the help!!!
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Old Nov 13, 2006 | 12:11 AM
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I installed a shaner ported TB on my 2000.
The ported throttle bodies don't really give much of a hp boost (if any),
but I found that the throttle response is much better, and also the engine and exhaust note got a lot deeper.
The throttle response is the primary reason that I purchased one, it helps alot from a standing start, especially if you have an A4.
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Old Nov 13, 2006 | 09:57 AM
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5 HP max... you won't feel that, but a professionally ported TB will give smoother throttle resposne.
A poorly done one will leave you with idle surging problems
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Old Nov 13, 2006 | 10:06 AM
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you won't be able to feel any increase in HP, maybe a somewhat better throttle response
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Old Nov 13, 2006 | 11:54 AM
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Originally Posted by rws.1
5 HP max... you won't feel that, but a professionally ported TB will give smoother throttle resposne.
A poorly done one will leave you with idle surging problems
I agree
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