I have the estoril sidebleed on my A55...its actually a relatively high hitting pipe compared to other estorils......i have the 44mm airsal A55 kit, and i rev a bit over 10,000rpm with it according to the gearing calculator. 26x24 gears and i hit 46mph.
18mm intake, 17.5mm phva.
Power really hits about 16mph, then i shift at 22, and it rips my face off again at 30mph, all the way up to 46.
Its a fantastic pipe.