Alright so the exhaust is absolutely amazing, the reason im giving it a 4 star and not a 5 start is because of the install, motordyne does not make the instructions easy what so ever, legit installed it backwards. Spent over 10 hours installing the exhaust and when we finished the exhaust was touching the floor, had really no choice but to drive my car home and broke every single clamp on the way home. My buddy and I did it and he has done a few axle backs before and he said this is by far the hardest one. but this easily could've been our fault.
The sound along with the motordyne test pipes is the most beautiful sound ever, on the first start you will be shook.
Shipping was decently fast, I ordered it in may and was promised January of next year but got it at the end of September. (Has nothing to do with z1 cause its made to order)
Z1 easily has the best customer service ive ever dealt with, anytime I asked for a update they emailed me back in less than 12 hours.