42 Draft Designs 1.8T 3" turbo-back exhaust systems combine their 3" downpipes and their 3" cat-backs for a perfect fit from turbo to tailpipe. Thanks to the modular construction of 42's downpipes, these turbo-back exhaust systems allow the user to switch between street and race series at any time. Six unique tip fitments allow fitment to any mk4 VW 1.8T.

Though the construction of 42's downpipes and cat-backs remain the same, they can discuss one feature unique to their 1.8T 3" turbo-back systems - power gains. In their extensive testing they were able to dyno test a 'typical' mk4 and measure the changes. They used a relatively stock 2002 GTI 337 edition. The car was chipped, had a cold air intake, and an aftermarket diverter valve. No other engine modifications were made to the car. Equipped with stock exhaust, they drove the car thoroughly and dyno tested it. The stock exhaust was swapped out for 42's 3" turbo-back system and the car was driven to adapt then dyno tested again. With weather conditions literally exact we measured peak gains of 22.5 hp and 48 lb/ft to the wheels! Power gains were felt all over. Boost was built faster and held out longer with the stock turbocharger. No power losses were felt at any point in the powerband. 

42's 3" turbo-back exhaust systems are available in street and race configurations with 6 unique tip configurations. Pricing starts at $705 and depends on series and tip fitment.