Right the car is a BMW E93 its a car my mum has had for 4 years.Atm its a 320 Msport Highline.Nice car but shite slow.

As it goes my mum is never going to buy another car after this and on agreement it is going to be mine.

First greedy thoughts was M5 power

of course I would love to make it YB powered but sensibly I want it quicker than spending 10k on a car twice as heavy than a Sapphire .

I dont care about suggestions,it could be chicken powered if you can back up the figures

Jap ? ?

Car in question








Please not horse shit.We had a older E30 around here a bit ago that was Yb'd but if was poo .I dont want to be that person who owns such a shitbox .

Obviously Turbo charged wins hands down,but what