I installed my cattless downpipe today as well as step one colder plugs. Car runs fine but if you do a pull in a gear it will blow blue smoke out of the exhaust for a few seconds then clear up. The car has a panda motor works intake tube, Cobb filter, catch can, colder plugs, cat less downpipe and a access port. Any ideas could it be build up by chance? It is my daily but does not get ran hard at all. I know blue smoke means oil but it didn't start until I put the down pipe in thanks!