Hey that's maximum idle air bypass, don't you know? Goes good with a 268.lol
And double filtered, too!
Hyup, your installer/tuner has some 'splaining to do!
I would get rid of that plastic fuel filter too. If it ever pops you could be in for a major meltdown!
And I would swap out that 20/50 racing oil, for some 10W30 street oil.