I’ve been debating on the two and the JB4 just seems to have much more online support thru their forums and frequent updates, whereas the Protuner seems locked in at what it is and that’s it. Plus i dont have any android devices and dont want to be forced to buy one cuz they dont support iOS. Still think i prefer the Protuner, but it is lacking some huge things that the JB4 provides.The Lap3 is a good improvement. Best cost/HP mod. I didn’t want to run it maxed out on the 93octane setting as this Sonata is my daily. And I do not plan on playing around or tuning with it.
It does fall on its face after about 5.5k rpms tho. Meaning, it pulls well up till that point then just levels off dramatically. No point in going past 6k rpms.
I was torn between the Lap3 and the JB4 because I had experience with Burger on my old 535. Ultimately the ease of install and just ‘set it and forget it’ is what won me over. I’d say do it