Tuning Help || Approach || Personal Opinions

[FenixDZN]

Hi guys, first time poster, just wanted people's opinions and details about what they know for 3 specific cars!
basically in Australia a new driver can't drive model cars that have a specific KW/HP range and engine size!
saying this I'm wanting to upgrade my BMW to one of the three listing pros and cons and what people would do in my situation.
firstly is the BMW 125i (2008-10) 6cyl 160kw
BMW 220i (2014) 4cyl turbo 135kw
328i (2012+) 4cyl turbo 180Kw

i would like to know if chip tuning / ECU Tune would see changes in performance, in aware a 125i being aspirated wouldn't see much of an engine boost with results, but factor in like Downpipes, high flow, intercooler for 220i and 328i would I really feel performance difference in any and if so, which one would you guys pick as this being my first car. Money isn't an issue and all are a possibility to me. I just want to build something to maximize its performance. I've heard a lot about 220i being better over all after completing them having better performance than a 328i fully modified and has a better 0-100km/h time also!

can anyone really fill me in about every car? Would like a sense of direction on what car to purchase as I have to practically keep this for 3 years on my current drivers license!

thanks

[mike@XPH]

the 220 will get you the most for the value when it comes to tuning