Belive Muppet Sports Corsa is quite well known and is no question, one seriously quick motor. Ran a 12. something last time i seen it, last year at Crail and heard the stories of 400+ bhp but with JDM's rollers being dodgy as and your over optimistically measured torque result proving it, 487 bhp?? .....mmmmmmmmm
= ?
to question a cars power, and to slate a place you dont know is just daft. i have helped build that corsa. i know what its made of. id not question its power.
a civic supercharged type-r ran on the rollers. it was mapped at 480 something bhp, it made 474. muppets corsa was mapped at 477. on the day it made 487 after we had done a few more mods to pipework on it.
the only inaccuarate readings are from people who have no clue about building an engine, or mapping a car, or using a dyno. if you knew, you'd not talk so much utter rubbish.
you sir are inaccurate. not the rollers.