Start up problems
H, I currently have a problem with my cooper s my engine is a 2004 model. I recently changed the exhaust manifold for a stainless one with a decat pipe and since this change I have had a problem with start up the car only ever starts second time. I read the error code and it gave me P0340 (camshaft position sensor A bank 1 circuit malfunction). Upon getting this error I changed the camshaft position sensor but the problem still persists. Has anyone had experienced this problem can you help?