Exhaust systems being removed
I want to take my exhaust off from the CAT backwards to see what it would sound like could these cause damage to the car ?

Audi’s A1 concept made a big impression at last year's Paris Auto show, slated as competition for other luxury brands’ compact entries, like the BMW 1 Series and the MINI Cooper. This four-door hatchback has been designed as a front-wheel- or all-wheel-drive vehicle, powered by a hybrid four-cylinder powerplant. A turbocharged 1.4-liter four-cylinder engine is mated to a 20kW electric motor that can run independently of or in concert with the internal combustion engine, depending on user selection. As a standalone, the electric motor can run up to 62 mph and can go over 30 miles before the gasoline engine would automatically kick in to recharge when the battery drops to 20%. Audi anticipates EPA estimates of around 60 mpg.
While the chassis will be partially derived from VW’s European-market Polo, the A1 will take design and structural elements from many VW and Audi platforms, as part of its component module paradigm, which utilizes pieces of many platforms in concert for each model. Two six-speed transmissions should be optional, and prices are estimated to stay in the low to high 20s, depending on options.
I want to take my exhaust off from the CAT backwards to see what it would sound like could these cause damage to the car ?
I have an Audi A1 that I converted into electric. To do so, I have to pull out the gas engine and replace the dsg transmission with a manual transmission. Now I'm facing the problem that the systems are not starting with the key switch like the assisted steering or the electric vaccum pump. How I make the computer of the car bypass the checks and start these systems so I can us the steering and the power brakes?
What is so great about this car? Have you ever driven one?