Purchased powerlink and tune from IE and had to get this to run stage 2 tunes. It unlocks a lot of power. Ive done lots of upgrades to my 2015 A4 and this made it feel like either my car was lighter or it had a V6. True difference in power. I would suggest a BMS throttle response controller of Pedal Commander too. Ive gotten upto 24-26lbs of boost with this addition. Youve spent this much money already, why not another $300 right?
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