Hi guys I had to replace the lampda probe with my Volvo v40 2.0L 16V the other day… It was totally rusted away, I thought after that my exhaust was tight again but far missing. The error is gone and the new probe also inside but the exhaust still roars from the front. The noise gets through under the front area driving gas cell. I had it already on the lift to look for it but I can not find the leaky spot. Has the v40 with 2.0 liter machine any where calculated connector? I still know the problem from my old three-legged golf which is at the place very much rusted times. I hope you can help me. Because since I can hear my exhaust gas unfiltered it does not pull as well and goes off like a bucket glue.