Listen man--I was never knocking your car. It looks like it'd be a decent
fun car.
But 5.6 seconds is not realistic for your car's power to weight
ratio...nevermind the fact that it's FWD. 217 hp, even it's to the wheels,
is not going to be that fast 0-60.
Speedos are never that accurate at 60mph readings, always optimistic, and
tires other than stock will vary in rpm. The best professional test drivers
could get an atmospheric-corrected time of 6.5 seconds in formal tests
stock. Your part mods will not add the hp to change that more than a 0.1
tenth. You are not more skilled than experienced journalists or any older
drivers. In the end, none of this matters at all. What matters is that you
drive safe on the street and show humility and respect to others on the
road.
Exhaust ain't doin' shit on that turbo engine. The turbo itself is the limiting factor. Those tires are also best in warmer temps...not that it was cold enough to actually reduce intake air temps either. You've got a lot to learn.