Originally Posted by chip-3door
bugger all difference on a cossie really IMHO
makes a huge difference on some cars though, early vauxhall XE engine for example REALLY splutters at about 2Krpm normally with a cone filter.
(due to hotwire AMM without ACT reference)
your spot on about the XE's , mine ran like a bag of shite with a cone filter on, got whooped by a R5 turbo, which prompted me to go straight home and but the standard box back on
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