Quote:
Originally Posted by Banstead Stig
3" doesn't always mean performance gains. Generally depends on the supporting components, not just the map I believe.
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Agreed - yes should have said it helps to have other support in mods - maybe ported headers, Harvey smith up-pipe and map along with better panel filter or induction kit etc - lots that can be done.
But having 3" over 2.5" will be a good start for gaining more bhp
