iv got the astra 2.2 with a powerflow exhast system
the only problem is when i accelarate very fast and change gears it back fires and does sound good,but the trouble i have is that the bracket on the back box is cracked, i took it back to powerflow and they just welded it back :?
some 1 has just told me today if i dont watch out my back box will just fall off at some point, does any 1 know if this is true or not 🙁