So i have 06 Vrs TFSI, Have not long fitted a decat. Since then when i put the car under load i get small amounts of smoke coming out. Sometimes when im standing idle for periods of time and set off get little puff to.... 

 

Something to worry about or need investigating?

 

Any advice would be great. 

 

 

Grey smoke can be a sign of oil burning. See this link https://www.yourmechanic.com/services/smoke-from-engine-or-exhaust-inspection