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Re: Mass air flow, not volumetric flow
Posted by GM (more from GM) on Fri, 25 Jan 2002 20:32:23
In Reply to: Mass air flow, not volumetric flow, Alex, Fri, 25 Jan 2002 20:10:55
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excuse my ignorance but I am attempting to understand :o)
I don't see why CFM doesn't mean much in this relationship. If you take 2 turbo's which can both take 25 PSI max where 1 flows say 500 cfm & the other flows 1000 cfm would you get more power from the 1000 cfm turbo thatis IF it was sized properly for the car? I understand that to big of a turbo will not allow it to develop boost till past red line (IE never) & to small of a turbo will do the opposite (no power on the top end) but finding the happy median is the key, correct?
I am not sure if this is how it works so please correct me! For simple math sake, If you take a 1000 cfm vs 2000 cfm turbo which both allow a max of 25 PSI with the same effeciency range while both turbo are setup properly to allow for lots-o-power. So if I just pull nimbers out of the air & say both turbo's are running at 12 PSI & flow 1/2 of what their max is (I know it's not possible but as an example) wouldn't the 2000 cfm turbo flow more air thus equaling more power? Both turbo's would be at the same temp & the 2000 cfm unit would require longer to spool up but max HP wise, who wins?
& also, what is the diff between CFM & MAF?
thanks!!!!
posted by 66.72.12...
Posts in this Thread:
- Which turbo to use? (Long), Alex, Fri, 25 Jan 2002 14:08:12
- Ditch the redline....hehehehe ;)~, Mr.SPG, Sat, 26 Jan 2002 12:02:16
- Alex: referral to a turbo "doctor", Keith S, Sat, 26 Jan 2002 08:45:28
- garret Gt series?, dave n, Fri, 25 Jan 2002 21:40:25
- T3/T4 is a good choice, Keith S, Fri, 25 Jan 2002 17:42:17
- Re: Which turbo to use? (Long), sully, Fri, 25 Jan 2002 15:29:59
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