Twanboat

I recently bought the JB+1 berger tune and air intake. The intake is amaing but i am having some issues with the tune. After I installed the tune it seems to give me cal ALOT of drag. It seems to have made the car worse. I drove it around a bit then the CEL came on. Not to sure if I have to flash the ECU or what. Its a plug and play so I dont believe i had to flash anything. Its for the 2012. I have a 2013. I dont think that would be an issue because its the same exact engine. Why is this tune not working? Thankyou.

Edit: I have a 2013 C250 coupe.

LouZ

I see it's your first post. Scroll down +/- 10 posts and you will have all of your answers in the multi page topic.