Macs aren't immuned to these problems, they have just as many holes as windows. It's just that windows is more mainstream so thats the one that get effected most. Why go to all the trouble of creating a virus that is only going to effect a minority, Hackers and virus makers are lazy by nature, so they want maximum effect from minimal effort.

consensus says i'm putting a 2" exhaust on my A15 with twin 40mm DHLA's then

No, I towed it home, removed R/F guard and bonnet, pulled out the damage, skim of bog, new bonnet, guard and radiator, on the road again. And yes I was dumb and stupid at the time (Happened about 10 yrs ago)
neglegence is not checking the cup's condition before filling it with coffee. metephoricly speaking

True true, accidents do happen, stones, pots and kettles, bigger fish to fry, etc. The point I was trying to make is if you put all the effort in rebuilding and careing for your car then only you have the right to wreck it (intentionally or not). Its about perception

I don't think I would be leting anybody near the drivers seat of my latest project, unless the keys were firmly in my pocket. Too much time and effort invested, to let some mindless asshole destroy it. If your willing to let someone drive your datto then its as much your fault as theirs if it goes horribly wrong

Heres something I wipped up

correct me if i'm wrong. but if a supercharger is at its peak on a 1600cc motor @7000rpm, then on a 1200cc motor its peak would be higher. calculating cfm ouput to match the motor.

Just for the record, the train was parked across the road, I was doing about 100, blind crest, Hello train, AINT NO WAY I'M DRIVING AROUND THAT!. Nothing but brake

i'm pretty sure the velocity through the 45's wont be high enough to have them running at there peak performance, On your A15. Torque performance has a good reputation for dyno tuning, as per the boyracer video "HighOctane". I think 2-2.25 inch is far better to run, If you run too big you loose back pressure which gives you mid range torque, the dyno people would be able to recommend the correct size from their readings

good tip, thanks for your help, that will explain why I couldn't find it