Yes I know you cant compare 2 differant forms of F/I, but remember s/c uses power to make power, therefor, I cant see it making over 100-200whp more with less boost than a turbo would.....
Now the C1 puts out 1000CFM @ 24psi on a flow bench, That means it will be very efficent but think of it this way..... you still just have 2.0L of air/fuel compressed at 24psi, whether it flows 600CFM or 1500CFM, I am not saying you wont make more power, it will, but I just cant see it making that kind of power.....theres a guy on here with a Mazda, his name is brian, he knows alot about the CFM vs PSI argument cause i use to believe it like how you did.....but you cant flow 1000CFM into a motor that will only flow 600CFM(I am just throwing #s out there) that 1000CFM rating is done on a flow bench to use for comparing it to other s/c or turbos.....

If you want, I will try digging up that thread, this guy could probally write a book on this topic.....
Again, I am not trying to start a fight or calling BS, maybe you know something I dont.... but I wont believe it til I see a dyno....or something,

hmmm I think the mods must of deleted that thread, I will try to see if i can find something to explain it better...

 

I know what you mean. thats how much air the C1 will flow, but not necessarily what the engine can flow. Creating a nice flowing exhaust and a nice port and polish'ed head should allow for those numbers to come true much easier. 24psi on the C1 should produce very nice numbers. Hope we can find out exactly what numbers here soon =P I will be starting off w/ 18-20psi on the C1 on my car here shortly. Im just waiting on shipping.

 

Well the thing with CFM is that you can push or pull a lot more air than the design allows. 600 CFM is the design or the extreme design limit?
But a greater amount of CFM passing through a object will increase the static pressure, which mean ultimately you can increase that 600 CFM if its demanding it.
Now in saying this, Im not stating that anyone is wrong, but I'm just throwing out that Static pressure will go up with the increased CFM therefore more can be put through an object. Now the heat gain or efficiency idk?

 

i'd sell that bitch and turbo the cobalt i already have, why waste money to build up another engine?? you already got one, and why waste money and a upgraded supercharger, look at the twin screw its only making 280 on 20lbs, and how long did it take them? what a waste, you could reach an easy 400 on 20lbs and no $$ outa pocket cause you got a free lsj to sell

 

On a stock restrictive exhaust, with only mod being an intake, also running little timing and I think they backed off around 5500-6000.....
Put full exhaust on there, take it up to redline or 7000k and 300-350whp will be easy on stock internals, with proper supporting mods, I am sure 400whp wouldnt be too far away... you could always run lots of water/meth and overspin the TS like everyone else does to their Eatons with 2.5-2.6 pulleys if you want to make more power.
What a waste??? Not everyone here is looking to make 400-500-600+whp cars here, most guys here use there cobalts as daily drivers..... I think 300-400whp is lots for a FWD daily driver, Should they have made a kit that requires people to dump +5K into there engines so it doesnt blow up?? They made a great kit that should be pretty reliable and still put out some good numbers, And It still WHINES!!!