Let's jump straight into it, your cousins tuned BMW 330i isn't fast, no in fact its average, so average that it would blend in at a farmers market on a sunday morning!
In 2008 we used to consider anything sub 6 seconds as "fast", but if you have eyes you will have seen its 2018 and ten years in the future that isn't so anymore.
The B7 Audi RS4 and E90 BMW M3 both did 0-100 in about 4.8 seconds - that is quick, but it isn't fast by todays standards anymore. Acceleration times go with the cars, if a Ford Focus RS can manage 0-100 in under 5 seconds, then manufacturers are going to step up their game to make sure the times correspond the higher up the food chain you are.
You may be able to keep up with a car from 2008 but race a car from 2018 and you'll be left standing like a teenage boy after his first kiss.
Yes your car may feel "fast" but if its a hot hatch or a modern small turbocharged car, youre most likely just being tricked by clever engineering.
Let me explain
Modern hatchbacks are built to be wild and exciting, you get FWD wheelspin and your neck breaks when the turbos kick in, you might even get bucket seats to make it feel like the real thing, but it isn't. And I realized how badly I was mislead after driving my first fast car. I thought "well I have been in a 350HP renault Megane RS, this is cake" then the 600HP LS engine downshifted and I accidentally impregnated the seat.
It's different in every way possible and the quicker the hot hatchbacks and entry level "QUICK" cars get, the faster the higher level "Fast" cars get.
Its great that we can now experience speed, that - a couple years ago only supercars were capable of, for the small amount of 69 chicken nuggets, but honestly, If I hear about how a tuned Ford Focus RS with 400HP, a frankenstein turbo and made of lightweight aluminium driftwood is quicker than a Lambo Huracan, I might just develop ear Chlamydia.
Join my tribe because it would be great if you did.