I have a 2011 chevy cruze 1.4 and it currently has a CAI, ZZP throttle body spacer, and I ported the in-tank myself about a couple of weeks ago, also on 93. The next thing I'm looking at getting a tune. I don't know how to install a tune, Some say you need windows and some say it's just plug and play. I was just looking at the BNR Tune 2011-2016 Chevrolet Cruze 1.4L Turbo, It starts out at 249.99 and there are a bunch of other add-ons like the BNR Autocal and BNR HPtuners. What are those? are they just for extra power from the tune? I'm just looking for a tune that adds more HP and TQ. I also looked at a tune from Trifecta performance, and it doesn't have all the other add-ons as the BNR tune has. Im just suck at what's the best bang for the buck tune I should get performance-wise and how to install it.