Yep - well spotted Phil. I've no idea why. Proalfa apparently measured the pre-mod BHP at around 180BHP, I think - well down on the quoted 210BHP, like you say, which is alarming. Apparently we should take manufacturers' quoted BHP figures with a pinch of salt - I guess they quote the maximum BHP for ideal conditions?
Reading a few forum threads and articles, it seems that it might also have something to do with where the measurements are taken - from the flywheel or from the wheels. Apparently even the drivetrain can sap bhp. So 'real world' horsepower often might not end up being near 'manufacturer' horsepower.
I don't know if anyone else who has had their Alfa on a rolling road has found that the quoted BHP is well down on their actual BHP. I'd be interested to know either way to see if mine is an isolated case.
Any advice as to what I could get checked first?
Last edited by Mattsky; 04-04-13 at 16:53.