There is always room for improvement - but so many of the ‘tuning parts’ makers try to solve 1 problem while missing that all the parts of a system have to work together day in and day out. It’s like the nonsensical chip makers who brag about 50 more horsepower while forgetting about the down...
I see lots of these optional bolt on, duct tape on, designed for pennies better than what Lexus spends billions on R&D.
Sadly many who add these who'dingies later post a thread of despair once it starts to nuke the GX.