If you start with a lower cr more of the engine range is in a 'progressive' boost above atmospheric.Once you are over around 10:1 on say a 91 octane at stoichometric a/f ratio (14.7) you need enrichment to go higher re det etc......
V6 MTX
'Don't p**s up my back then tell me it's raining!!!"
'Its only nuts & bolts!'
'If I build it,fix it,upgrade it or modify it...MAYBE they will come....!
Haines Motor Sports Inc,
Dealer for 'Quaife America' & 'Autotech Sport Tuning'
SOLE USA Dealer for the American Axle 'AUSSIE BAR'...
Get a Turbo for you Zetec from HMS Inc...by 'The Demon' ...www.DemonDynamics.co.uk
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