[shanknik]

Hi all,

I am looking at tuning my g20 330i and looking to get some opinions on any of these. I have never done this before but been doing some reading and the ability to flash back to stock prior to a service is recommended.

I am looking for the most amount of power, in the future I may do the intake / exhaust system however very cautious about warranty.

I have also heard about custom tunes / maps and not entirely sure how that works.

Any advice would be appreciated!