Backbox delete is performed at DKU Performance by our amazing engineers to increase the noise of the exhaust system and give your car a more sporty and increased sound. The owner of this 3 GT also wanted his car to be louder so we removed the backbox and installed our premium downpipe of 2.5 inches to make the airflow better. We completed the downpipe installation with our premium custom tips by DKU. The results were epic and we are proud to say that all types of exhaust parts are designed and built in the house of DKU Performance by our trained and experienced engineers. At DKU Performance, we design and built a full range of exhaust systems from the turbo-back exhaust system to performance exhaust systems to fulfil all kinds of exhaust related requirements.