Ahh yes i am always quite reserved and give companies opportunities to fix it......... or in APR's case i cant say much at all as its Beta software.
So to be fully transparent:
- Exhaust sounds great and gives good power but....
- Insane amount of resonance/vibrating at 2500rpm-3000rpm
- Drones from 3000rpm to idle when decelerating
- Quite boomy at 1500rpm when cruising
All other times its fine, so need to get the car up on the ramps to make sure everything is bolted up properly, otherwise there will most likely need to be a different resonator supplied with the exhausts.
This may just be my BCS downpipe and software causing these issues, their exhaust is designed for their downpipe or stock downpipe.