Dinan X-pipe installed with stock exhaust system.

Dinan x-pipe for F80 M3, after $1000 spent, the car is sitting there waiting for Dinan to mail the correct parts that would finally fit a stock exhaust system. (Which they claimed that it does fit stock exhaust system). It's just sad that the parts were installed by BMW certified technician at a BMW dealership/Dinan Certified Dealer, still doesn't fit, I was advised as : do not race or auto cross the vehicle. It will run just fine until we find solution.
It's also sad that the solution might just only cost them couple $$$$. But no one seems to care....

[Wheeliej]

What’s the deal is it vibrating on the car