Originally Posted by Alscobra
Just keeping the friendly debate alive. Psi and scfm equal. Sc or turbo. How will turbo produce more power? Chargers may rob a couple horses at best to spin it. Turbos will restrict the exhaust. My theory is that restricted exhaust systems build heat and backpressure which means boom. Just my opinion.
Increased back pressure can be easily dealt with by increasing exhaust flow. That's why you'll see turbo cars running 3" or 3.5" exhaust versus the usual 2.5". There's absolutely nothing you can do to get rid of the parasitic blower loss though, other than up the boost to make up for it.
Have you ever read that list of fun facts that circulates around about the top fuel cars? It's been awhile since I've read it, but if I remember right, they spend around 1000 horsepower just to spin the blowers. Obviously your average Mustang blower is nowhere near that. At the same time though, it is significant. You gotta think about the RPMs those things reach and how much work it is to make that happen.