pedaltuner

Hey there guys, TL : DR 1. Necessary parts that compliment JDM Roush upgrade kit? 2. How bad is gas mileage difference? 3. How big of a smile did you have after the upgrade kit install? 4. Is pedal commander necessary or does JDM tune solve this problem? 5. Thank you for all of the support...

Anyone tested both. Is pedal commander worth Almost double? Pro’s/cons on pedal tuners? For daily driving, if you leave it in on (say your preferred mode) when driving. So you have to adjust it again on every start, or will it turn on to the last mode you left? Thanks