[accel]

I installed powerbox soon after euro intake, and
could always feel obvious difference tuning on vs tuning off. Especially in sub 4000 rpm range.

Recently I installed bmw m perf.intake and the difference is gone.

Thought I'd contribute this, as I'd seen threads of people arguing whether powerbox is actually doing anything in perf.department or not.

So, might depend on other mods you have.

I'm switching to map #6 - throttle remap and no tuning meanwhile. Powerbox is still cheaper than sprint booster.