The boost is variable and it goes up to 24 psi with about 17 psi at around 3,000 rpm. Many prototypes have been up and running for more than two years with stock engines. It is not boost that kills the engine, it is bad tuning and detonation at the wrong place/time.

Before the IC were added, the B16A was making over 400 hp, the B18C5 (Type-R) just under 400 hp. These engines have more than 200 ft-lbs below 2,000 rpm and the peak torque number is conservatively rated at 350+ ft-lbs.

Many people wonder about this. From a engineering point of view, turbos make a lot of sense. They make use of otherwise wasted heat and energy that normally goes out of the exhaust pipe. Theoretically that are more efficient than SC. T.O.O. like and have worked with turbos before (lot of experience in CART), but after much thought he feels sc will do the job right - that is, 11 second time slips with full weight, on pump gas, with cat intact. Full street legal trim basically. Main reason he didn't use turbo was because the stress it adds to an engine that was not designed for turbo. Factory turbo car has a thoughtful cooling system, and the cylinder head and engine block has the necessary features for prolong exposures to the intense heat present in turbocharged engines - such as stainless exhaust valves, different valve seat material, proper cooling around the exhaust ports...