I believe the cracked hose allowed air into your cooling system. You need to allow the car to get to running temperature then slowly loosen the small screw on top of thermostat housing. Slowly is the...
Yeah Herc, I figured you'd go there. It's still apples to oranges. When you hear the word "Japan" what is the first thing you think of? Probably a modern country with millions of people, electronics...
Yes, but you can make just as much, probably more since you can have a better intake, with a turbo only.
And it's not nearly as hard or complicated as twin-charge.