<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by spooky:
<strong>As for trying harder phaderunner, thinking about it again im pretty sure the chip and filter etc probably wont make much of a difference to top speed, just the way it gets there.</strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">No you're actually right, I was mostly kidding!
The power required to increase top speed is proportional to the increase in top speed cubed. All things being equal (mostly air resistance at top speed) to increase your top speed by 10% you'd need a power increase of 33%.
The few BHP extra gained from chipping, air filter, exhaust etc. isn't going to make a massive difference. I'd expect an extra few MPH but not a lot more.
You are absolutely right though the tuning you've done will affect the way the car gets to top speed!
Losing some air resistance would be much more effective but with a frontal profile that already gives something in the region of 0.28Cd there's not a lot left to do. The 145's not just that shape for looks you know! Damn those Alfa designers are clever, form and function (and they say it's just the Germans who can do that, PAH!)