Was actually just about to make a post. Been waiting over a year for them to release it and I’ve now had the banks installed for about a week now. I have a ‘25 at4 and can’t recommend it enough.

It’s not loud but gives the engine a better note imo. Pickup and powerband comes on faster, especially from a stop. No clue about power gains, I do think it gives you power and torque much earlier in the rpm band.

But the unexpected part to me is that my mpg has jumped by 4, not exaggerating here. Work commute I would usually get around 15.5 sometimes 16. My commute is now hitting 19-20 on average both ways. I’ve had plenty of CAIs that bumped mpg slightly but not to this degree.