Perhaps a interpretation of the two sheets?

As can be seen the compound charged car attains a much higher power output from the low rev-range. Hence the powerful torque. The power generated by the compound engine is superior, comparing to rods, up to a certain limit where i presume the supercharger gets way inefficient. When the turbo kicks in for both of them its a big difference, rods engine apparently having a much better engine set up for the turbo in use(no shit!? GT40(Diesel aggregate) versus WAY more efficient GT35R), due to the actual climbing of power through the entire register.

The spec of the engine is as follows, copied from the site:
Volvo B230 with navy crankshaft
SPM H-profile connecting rods
Venolia pistons
16 Valve Volvo head with standard valves, port grinded with own ideas
Self made mechanical valve adjustment
Camshafts grinded by SPM
Double valve springs
Garret GT-40 turbo
Eaton M62 compressor with an own system for control of air between the turbo and the compressor
Exhaust manifold manufactured in stainless steel
Wastegate with 50mm valve
Self made intake manifold with separate 46mm throttle and full radius funnels
Autronic engine management system and CDI ignition
Mercury F1 ignition coils
Self made Intercooler and watercooler

http://www.hilmersson-racing.com/start.asp?show=j

Any more specs wanted? Its stated out much more in dept in swedish on the site...

Itsmeagain: Thanks for the critics on my english All of my studies here in sweden at university is performed using english material actually, all my essays are in english and so on... Besides that im part linguist part computer scientist