I was curious to know what the CFM on an S4 N/A was. I know CFM will go up as RPM goes up. If I am sizing a turbo, what CFM should i be using while looking at the compressor maps?



Thanks!

 

http://www.not2fast.com/turbo/glossary/turbo_calc.shtml



two different questions, but 146hp@6500 rpm is about 255 cfm



compressor maps are usually in LBS/min, 146hp @6500rpm is about 20.50



how much you should be looking for depends on the power you want! and remember to look at other rpms, turbo is most fun on the street when its sized for more midrange