hello again folks So i fitted a decat about a month ago now , ever since it has smoked a bit , but it has gradually got worse.It smokes when am slowing down and stopping at lights is worse, am sitting in a cloud of smoke lol and there's a smell of oil that's cruel and using a good bit as well. I've got a 4 branch mild steel,stainless decat fuel turned to 2.5 bar (with vac pipe off) running .8 bar boost , didn't have the fueling checked yet, done a compression test last week and got 172 175 176 179.There's no oil in the intercooler piping there's a very small leak in the return pipe for turbo up at the gasket but it doesn't leave a pool of oil under the car.Could it be the valve stem seals ? or the turbo seals going ? It's really getting annoying now lol. it's white smoke forgot to mention. It can shoot out black sooty stuff on the ground on start up but i was thinking that was just condensation as there's no real smell to it . Any help much appreciated