I am only speaking from experience when i say that both Evo's that i have had have achieved the power quoted from tune and exhaust modifications. if you have the right tuner on the job, those sort of numbers are achievable. I have also been told that with an E85 tune and injector upgrade, i can get up to the 300kw/400hp atw. i have read a lot of people quoting those sort of numbers. I have always said that the gains are what matters, not end number

 

 

Not quite sure what you are trying to prove. Before you start discrediting people, you should really do some research. This is one package easily provided at a nominal fee.
http://www.willallracing.com.au/wr300.htm

I have been around professional tuners and racers of Evo's for years, so when i say that a car reached a number, it was as true as one can measured.