TheRacerBoss

I am looking to gather information on the best quad exhaust out there.
What we have on the list is
1. Remus
2. Magnaflow
3. Umnitza Quad
4. Any other brand you would recommend?

Some major comparison factors that you might want to bring forth from your knowledge, experience or expertise

1. Sound\Exhaust Note
2. Horse Power Gain\Loss
3. Cabin Drone\Noise
4. Fuel Economy
5. Performance
6. Aesthetic Value (Appearance - Tips\Construction)
7. Price

Also, if anyone is planning to get rid of their quad setup that would fit a 06 - 530i please PM me

Da_Meister_22

The best one Ive heard so far that is custom made, was with a Magnaflow muffler and then Y pipes to the tips. On the other hand, the UMNITZA is not as deep, but you might like it.