E36 M3. 182
Hi, changed my downpipe/cat assy because the flexible bit at the top was goosed, started her up, sounded fine. drove her down the road, noisy as fcuk when opening the throttle, sounds fine on a constant throttle though. could it possibly be the manifold/downpipe gasket, as i re used the old one? Or could the manifold be cracked??![Mad :mad: :mad:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)