Cold Air Intake

Bhaf is a gimmick unless you're making some real power. Period. Not going to beat stock filtration and a cold air filter, by itself isn't going to free up enough air to spin the turbo that much easier resulting in 100deg egt reduction. And if it does, who cares as long as you're still in the safe range.
Coming from a guy that mods about everything, I wouldn't give $10 for one.