Quote:
Originally Posted by 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!
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in terms of power out of the box, bm3 and Jb4 offers the most.
MHD is more conservative.
You can custom tune all these options. Jb4 with BMS, Bm3/MHD with third party custom tuners.
Custom tuning means that you are sent a map thats optimized for your car. Your tuner will ask you to datalog, they then make changes to the make for most power/reliability