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 fuel delivery question

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Disgustang
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fuel delivery question - Page 2 Empty
PostSubject: Re: fuel delivery question   fuel delivery question - Page 2 Icon_minitimeWed Jul 14, 2010 5:10 pm

vietnambob wrote:
headers will absoluetly affect A/F ratio even on a mass air car. its a bit hard to explain but its something like transient air. its air being run though the engine that is not being utelized due to a small amount of inefficiency. but when u add headers, it runs lean because its not using that transient air even though the mass air flow still sees the same amount of air. when i tuned a 04 gto once, after the headers, the wot a/f was up to about 14.5-15.0 to one when it should be 12.8 to one. the mass air works pretty well, but has its limitations.

oh and it your fuel pump takes a shit while your floored, that will be bad news in an expensive way.

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