Hello everyone,
Has anyone ever noticed power lose when straight pipe with rez and muffler delete. I've lost back pressure from stop to go. I am thinking to put the stock rez back on. I heard it's not good for the engine or turbos for the long run. What kind of set up is safe. 2013 bmw 750i x. 113,000km please advice
Has anyone ever noticed power lose when straight pipe with rez and muffler delete. I've lost back pressure from stop to go. I am thinking to put the stock rez back on. I heard it's not good for the engine or turbos for the long run. What kind of set up is safe. 2013 bmw 750i x. 113,000km please advice
