mapping for header change
#1
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mapping for header change
Hi guys,
had my car mapped a few times now and im changing my equal length manifold back to standard manifold
now obviously everyone says it needs mapping, But my question is what do they change within the map for this?
anyone have any good info please?
thanks
had my car mapped a few times now and im changing my equal length manifold back to standard manifold
now obviously everyone says it needs mapping, But my question is what do they change within the map for this?
anyone have any good info please?
thanks
#2
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its all really to do with exhaust pulses, i.e equal length is almost constant fumes hitting the prop of the turbo where as the un equal means it will have irregular pulses until at higher RPM, this will change airflow which also changes the fuelling needed. Someone may correct me on this tho
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What kind of fuelling changes and ignition advance would be changed?
Sorry just trying to understand
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