My decat finally come today, after i was sick of waiting and gutted my cat yesterday ( typical lol ) had a bit of trouble getting the 3 bolts which hold the bottom bracket of the cat to the exhaust. It is a good job that i bought an air compressor a few months ago with an impact wrench otherwise i would never have got the bolts loose. Even with my standard exhaust and manifold you can feel a big difference, the turbo spools up quicker and there is more midrange torque