Hi, I relation to my last post i have since spoken to the Australian agent for Eaton superchargers. He calculated the M90 at 10 000 supercharger rpm (approx 5000 engine rpm) the super chager would be displacing 400cfm. The intercooler according to the manufacturer will flow 390cfm at 7psi. ie if there is 7 psi of preasure at the inlet the the cooler then there will be 390cfm of air coming out of the other. How do i work out possbile boost preasures based on those figures? I persume i need to know how much air the engine will consume and minus that off the supercharger displacement? Is there a figure or a formula to know how much air a Delorean engine will consume at 5000 rpm? Thanks again, Nick To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/