Instant noticeable improvement to acceleration without a tune. Took the car a min to adjust but basically same day the ECU sorted it out. That supercharger screams now it’s like hearing an angel hum to you. Audi Fam know what I’m talking about haha!! Amazing how much faster it accelerates. The stock pen intake is so much less air flow. Like from breathing through a straw to a firehouse basically. If tuning stage 1 wasn’t so expensive I’d be 100% adding that next from IE. They take the lead in this industry as far as I’m concerned so move over 034motorsports. If IE wants to just gift me an ECU/TCU stage 1 for completing my first mod using their product then I’d not be against it (wink). 2013 Audi b8.5 S5 coupe Premium Plus automatic. This car is a total sleeper now. I kept up with a Tesla after adding this intake for example